ExperimentAbsorbanceIntensity
ExperimentAbsorbanceIntensity[Samples]⟹Protocol
generates a Protocol object for measuring absorbance of the Samples at a specific wavelength.
Absorbance intensity studies how samples absorb ultraviolet and visible light radiation. Samples are exposed to light at specific wavelengths and the absorbance is measured by determining how much light is transmitted through the sample for each of those wavelengths. Because the absorbance of a substance at a given wavelength is directly proportional to the product of its concentration and the pathlength of light through the sample, this experiment can be used to quantify how much of a substance is present in a given sample. For samples whose concentration falls outside the linear range of a fixed-pathlength reading, the SoloVPE+ variable pathlength spectrophotometer collects absorbance at a series of pathlengths within the same sample and determines concentration from the slope of absorbance versus pathlength (Slope Spectroscopy), eliminating the need for serial dilution.
Experimental Principles
Figure 1.1: Procedural overview of an AbsorbanceIntensity experiment using a Lunatic plate reader. Step 1: Samples are loaded into a microfluidic chip. Step 2: Samples are pumped into the large (1st) and small (2nd) cuvettes along the microfluidic flow path. Step 3: The absorbance value is collected for the specified wavelength for each of the samples, using either the larger or smaller of the cuvettes depending on how strong the absorbance is. Step 4 (optional): The concentration of the samples is determined using the Beer-Lambert Law.
Figure 1.2: Procedural overview of an AbsorbanceIntensity experiment using the PHERAstar FS, FLUOstar Omega, or CLARIOstar plate readers. Step 1: Samples are prepared in a reader-compatible shallow well plate. Step 2: Injection lines are cleaned and primed. Step 3: The assay plate is optionally held at a specified temperature. Step 4: Injection samples are dispensed into the assay plate. Step 5: The assay plate is shaken. Step 6: The absorbance value is collected for the specified wavelength for each of the samples. Step 7: Optionally follow-up analysis, such as standard curve fitting, can be performed.
Figure 1.3: Procedural overview of an AbsorbanceIntensity experiment using a Cary3500 Spectrophotometer. Step 1: Samples can be incubated, centrifuged, filtered, and/or aliquoted in a compatible container using the shared sample preparation framework. Prepared samples are transferred into instrument compatible cuvettes. Step 2: Prepared samples can optionally be equlibrated to a temperature before absorbance readings. Step 3: The absorbance value is collected for the specified wavelength for each of the samples (up to 7 samples and 1 blank simultaneously). Step 4 (optional): The concentration of the samples is determined using the Beer-Lambert Law.
Figure 1.4: Procedural overview of an absorbance experiment using the SoloVPE+ variable pathlength spectrophotometer. Step 1 (Prepare Sample): The sample is mixed and pipetted into a variable pathlength vessel at the instrument. Step 2 (Read Sample): A monochromator selects the measurement wavelength and the light is carried into the sample from above by the Fibrette Optical Component, which is raised and lowered to vary the pathlength between its tip and the detector below the vessel while an absorbance reading is collected at each pathlength. Step 3 (Visualize & Analyze): Absorbance is plotted against pathlength, and the concentration of the sample is determined from the slope of the fitted line, which by the Beer-Lambert Law is the product of the extinction coefficient and the concentration.
Instrumentation
Lunatic
Figure 2.1: In the Lunatic, a Xenon Flash Lamp sends photons through the large and small cuvettes of each microfluidic chip. The light that is not absorbed is then directed through a prism which splits the beam into wavelengths from 230 nm to 750 nm that are measured by the detector.
Cary 3500
Figure 2.2: The Cary 3500 is a UV/Vis spectrometer with the capacity to interrogate seven samples and one reference sample simultaneously. The temperature for each pair of sample cuvettes is controlled by Peltier modules for a total of 4 independent temperature zones that can range from -10 Celsius to 100 Celsius. Currently, it supports a single temperature profile for all temperature zones. Sample temperature can either be recorded from the cuvette block temperature or by immersion probes. The light source is a xenon flash lamp. The light beam from the lamp is split into different wavelengths ranging from 190 nm to 900 nm and the desired wavelength is isolated using a monochromator. The incident light beam then passes into the sample module where it is split into 8 beams by a fiber optic beam splitter. Each beam excites one sample cuvette and the emitted light is then collected by the instrument detector.
CLARIOstar
Figure 2.3: In the CLARIOstar, a Xenon Flash Lamp sends photons through each well of the plate. The light that is not absorbed is then directed through a prism which splits the beam into wavelengths from 220 nm to 1000 nm that are measured by the detector.
The plate chamber can be heated up to 45°C and it can mix the plate at up to 700 RPM before the run.
The reader has two 300μL syringe pump injectors which can be used for 0.5 - 300 μL injections of two unique samples prior to the run.
CLARIOstar Plus with ACU
Figure 2.4: In the CLARIOstar Plus, a Xenon Flash Lamp sends photons through each well of the plate. The light that is not absorbed is then directed through a prism which splits the beam into wavelengths from 220 nm to 1000 nm that are measured by the detector.
The plate chamber can be heated up to 45°C and it can mix the plate at up to 700 RPM before the run.
The reader has two 300μL syringe pump injectors which can be used for 0.5 - 300 μL injections of two unique samples prior to the run.
FLUOstar Omega
Figure 2.5: In the Omega, a Xenon Flash Lamp sends photons through each well of the plate. The light that is not absorbed is then directed through a prism which splits the beam into wavelengths from 220 nm to 1000 nm that are measured by the detector.
The plate chamber can be heated up to 45°C and it can mix the plate at up to 700 RPM before the run.
The reader has two 300μL syringe pump injectors which can be used for 0.5 - 300 μL injections of two unique samples prior to the run.
PHERAstar FS
Figure 2.6: In the PHERAstar, a Xenon Flash Lamp sends photons through each well of the plate. The light that is not absorbed is then directed through a prism which splits the beam into wavelengths from 220 nm to 1000 nm that are measured by the detector.
The plate chamber can be heated up to 45°C and it can mix the plate at up to 700 RPM before the run.
The reader has two 300μL syringe pump injectors which can be used for 0.5 - 300 μL injections of two unique samples prior to the run.
SoloVPE+
Figure 2.7: The SoloVPE+ measures absorbance at a range of pathlengths within a single sample. A xenon flash lamp feeds a monochromator that selects the measurement wavelength from 190 nm to 1100 nm with a 1.5 nm bandwidth, and a fiber optic cable carries that light to the Fibrette optical component, a disposable probe held above the sample by the quick set Fibrette coupler. The sample vessel sits on the sample platform with the detector directly beneath it, so raising and lowering the fibrette varies the pathlength between the tip of the fibrette and the bottom of the vessel. MinPathlength, MaxPathlength, PathlengthStepSize, and NumberOfPathlengthPoints set the pathlengths at which absorbance is collected, and the concentration is determined from the slope of absorbance versus pathlength. The vessel sets the maximum pathlength and the volume required: 5 mm for the MicroQuartz, SmallQuartz, and SmallCOC vessels and 15 mm for the LargeQuartz, with the SmallCOC transmitting only from 220 nm to 800 nm.
Experiment Options
General
MeasurementStrategy
The overall approach used to acquire absorbance readings for SamplesIn. PlateReader holds samples in an open-well container and shines light from above through the liquid column at a pathlength determined by the fill height. Cuvette holds samples in a square container with transparent sides and passes light horizontally at a fixed pathlength. Microfluidic loads samples into narrow channels that gravity-feed measurement chambers read from above at a fixed pathlength. VariablePathlength (Slope Spectroscopy) steps a fibrette optic probe through a range of pathlengths in the same sample and determines concentration from the slope of absorbance versus pathlength, eliminating the need for sample dilution.
Default Calculation: If an Instrument is specified, set to match it (Lunatic to Microfluidic, SoloVPE+ to VariablePathlength, Cary 3500 or another spectrophotometer to Cuvette, any other plate reader to PlateReader). Otherwise set from the specified options: VariablePathlength if any VariablePathlength option is set, Cuvette if SpectralBandwidth or any AcquisitionMix/stirring option is set, PlateReader if any sampling, injection, or plate reader mixing option is set or the samples are prepared robotically, and (when Temperature or EquilibrationTime is set) Cuvette for samples of at least 400 Micro Liter or PlateReader otherwise. Defaults to Microfluidic when no option requires another strategy.
Instrument
Default Calculation: Automatically resolves to Model[Instrument, PlateReader, "FLUOstar Omega"] if Temperature, EquilibrationTime, or any of the PlateReaderMix options are specified. If using VariablePathlength MeasurementStrategy, set to Model[Instrument, Spectrophotometer, "SoloVPE+"]. Otherwise set to Model[Instrument, PlateReader, "Lunatic"].
Pattern Description: An object of type or subtype Model[Instrument, PlateReader], Object[Instrument, PlateReader], Object[Instrument, Spectrophotometer], or Model[Instrument, Spectrophotometer]
Programmatic Pattern: ObjectP[{Model[Instrument, PlateReader], Object[Instrument, PlateReader], Object[Instrument, Spectrophotometer], Model[Instrument, Spectrophotometer]}] | Automatic
MaxLoadingRetries
The maximum number of repeated measurements that can be performed when valid data cannot be obtained due to unsuccessful absorbance readings by the instrument. Only samples lacking valid data are re-measured, and each repeat will be performed using a new microfluidic chip. This option only applies to the Microfluidic plate readers.
Default Calculation: When using the Microfluidic plate readers, automatically set to 2. Otherwise set to Null.
RecoupSample
Indicates if the aliquot used to measure the absorbance should be returned to source container after each reading.
ContainerOut
The desired container generated samples should be transferred into by the end of the experiment, with indices indicating grouping of samples in the same plates.
Default Calculation: Automatically selected from ECL's stocked containers based on the volume of solution being prepared.
Pattern Description: An object of type or subtype Model[Container] or Object[Container] or a prepared sample or Null.
Programmatic Pattern: ((ObjectP[{Model[Container], Object[Container]}] | _String) | Automatic) | Null
Preparation
Indicates if this unit operation is carried out primarily robotically or manually. Manual unit operations are executed by a laboratory operator and robotic unit operations are executed by a liquid handling work cell.
WorkCell
The automated workstation with a collection of integrated instruments on which this unit operation will be will be performed if Preparation -> Robotic.
NumberOfReplicates
The number of times to repeat absorbance reading on each provided sample. If Aliquot -> True, this also indicates the number of times each provided sample will be aliquoted. Note that when using the Lunatic, this indicates the number of independent times a 2 uL aliquot will be put into the Lunatic chips and read, and when using the BMG plate readers, this indicates the number of aliquots of the same sample that will be read. When using the VariablePathlength MeasurementStrategy, each replicate requires a new Fibrette Optical Component and a fresh aliquot from the sample vessel.
Default Calculation: When using the BMG plate readers, automatically set to 3 if QuantifyConcentration is True for any experiment sample. When using the Lunatic, automatically set to 3 or 2 depending on the total number of the experiment samples and the blank samples if QuantifyConcentration is True. The total number of samples allowed in one Lunatic run is 94. Otherwise automatically set to Null.
Sample Handling
MicrofluidicChipLoading
When using the Microfluidic plate readers, indicates if the Microfluidic Chips are loaded by a robotic liquid handler or manually.
Default Calculation: When using the Microfluidic plate readers, automatically set to Robotic. Otherwise set to Null.
Temperature
Indicates the temperature the samples will be held at prior to measuring absorbance and during data acquisition within the instrument. The VariablePathlength MeasurementStrategy does not support temperature control.
Default Calculation: Sets to Ambient if an instrument is capable of manipulating the temperature of the samples.
Pattern Description: Ambient or greater than or equal to 25 degrees Celsius and less than or equal to 45 degrees Celsius.
EquilibrationTime
The length of time for which the samples equilibrate at the requested temperature before being read.
Default Calculation: If an instrument is capable of setting the temperature of the samples, sets to 0 Second when Temperature is set to Ambient. Otherwise, it is set to 5 minutes.
TargetCarbonDioxideLevel
Pattern Description: Greater than or equal to 0.1 percent and less than or equal to 20 percent or Null.
TargetOxygenLevel
The target amount of oxygen in the atmosphere in the plate reader chamber. If specified, nitrogen gas is pumped into the chamber to force oxygen in ambient air out of the chamber until the desired level is reached.
Pattern Description: Greater than or equal to 0.1 percent and less than or equal to 20 percent or Null.
AtmosphereEquilibrationTime
The length of time for which the samples equilibrate at the requested oxygen and carbon dioxide level before being read.
Default Calculation: Automatically set to 5 Minute if TargetCarbonDioxideLevel or TargetOxygenLevel is specified. Otherwise, set to Null.
PlateReaderMix
PlateReaderMixTime
Default Calculation: Automatically set to 30 second if any other plate reader mix options are specified.
PlateReaderMixRate
Default Calculation: Automatically set to 700 RPM if any other plate reader mix options are specified.
Pattern Description: Greater than or equal to 100 revolutions per minute and less than or equal to 700 revolutions per minute or Null.
PlateReaderMixMode
Default Calculation: Automatically set to DoubleOrbital if any other plate reader mix options are specified.
MoatSize
Indicates the number of concentric perimeters of wells to fill with MoatBuffer in order to slow evaporation of inner assay samples.
Figure 3.1: Use the moat options, MoatBuffer, MoatVolume and MoatSize to create an outer ring of wells filled with buffer. This has been shown to decrease evaporation during long reads.
MoatVolume
Default Calculation: Automatically set to the RecommendedFillVolume of the assay plate if informed, or 75% of the MaxVolume of the assay plate if not, if any other moat options are specified.
Pattern Description: Greater than or equal to 1 microliter and less than or equal to 300 microliters or Null.
MoatBuffer
Pattern Description: An object of type or subtype Object[Sample] or Model[Sample] or a prepared sample or Null.
RetainCover
Indicates if the plate seal or lid on the assay container should not be taken off during measurement to decrease evaporation. When this option is set to True, injections cannot be performed as it's not possible to inject samples through the cover. When using the Cuvette Method, automatically set to True.
Absorbance Measurement
SpectralBandwidth
When using the Cuvette measurement strategy, indicates the physical size of the slit from which light passes out from the monochromator. The narrower the bandwidth, the greater the resolution in measurements.
Default Calculation: When using the Cuvette measurement strategy, automatically set 1.0 Nanometer. If using plate reader, set to Null.
Pattern Description: Greater than or equal to 0.5 nanometers and less than or equal to 5 nanometers or Null.
TemperatureMonitor
When using the Cuvette measurement strategy (Cary 3500), indicates which device (probe or block) will be used to monitor temperature during the Experiment.
Default Calculation: When using the Cuvette measurement strategy, automatically set to CuvetteBlock. If using plate reader, set to Null.
AcquisitionMixRate
When using the Cuvette measurement strategy, indicates the rate at which the samples within the cuvette should be mixed with a stir bar during data acquisition.
Pattern Description: Greater than or equal to 400 revolutions per minute and less than or equal to 1400 revolutions per minute or Null.
AdjustMixRate
When using a stir bar, if specified AcquisitionMixRate does not provide a stable or consistent circular rotation of the magnetic bar, indicates if mixing should continue up to MaxStirAttempts in attempts to stir the samples. If stir bar is wiggling, decrease AcquisitionMixRate by AcquisitionMixRateIncrements and check if the stir bar is still wiggling. If it is, decrease by AcquisitionMixRateIncrements again. If still wiggling, repeat decrease until MaxStirAttempts. If the stir bar is not moving/stationary, increase the AcquisitionMixRate by AcquisitionMixRateIncrements and check if the stir bar is still stationary. If it is, increase by AcquisitionMixRateIncrements again. If still stationary, repeat increase until MaxStirAttempts. Mixing will occur during data acquisition. After MaxStirAttempts, if stable stirring was not achieved, StirringError will be set to True in the protocol object.
MinAcquisitionMixRate
Sets the lower limit stirring rate to be decreased to for sample mixing in the cuvette while attempting to mix the samples with a stir bar if AdjustMixRate is True.
Default Calculation: Automatically sets to 20% RPM lower than AcquisitionMixRate if AdjustMixRate is True.
Pattern Description: Greater than or equal to 400 revolutions per minute and less than or equal to 1400 revolutions per minute or Null.
MaxAcquisitionMixRate
Sets the upper limit stirring rate to be increased to for sample mixing in the cuvette while attempting to mix the samples with a stir bar if AdjustMixRate is True.
Default Calculation: Automatically sets to 20% RPM greater than AcquisitionMixRate if AdjustMixRate is True.
Pattern Description: Greater than or equal to 400 revolutions per minute and less than or equal to 1400 revolutions per minute or Null.
AcquisitionMixRateIncrements
Indicates the value to increase or decrease the mixing rate by in a stepwise fashion while attempting to mix the samples with a stir bar.
Pattern Description: Greater than or equal to 50 revolutions per minute and less than or equal to 500 revolutions per minute or Null.
MaxStirAttempts
Indicates the maximum number of attempts to mix the samples with a stir bar. One attempt designates each time AdjustMixRate changes the AcquisitionMixRate (i.e. each decrease/increase is equivalent to 1 attempt.
AcquisitionMix
When using the Cuvette measurement strategy, indicates whether the samples within the cuvette should be mixed with a stir bar during data acquisition.
StirBar
When using the Cuvette measurement strategy, indicates which model stir bar to be inserted into the cuvette to mix the sample.
Default Calculation: If AcquisitionMix is True, StirBar (model xxxx) must be specified. Automatically set to Null.
Pattern Description: An object of type or subtype Model[Part, StirBar] or Object[Part, StirBar] or Null.
NumberOfReadings
Number of redundant readings taken by the detector to determine a single averaged absorbance reading. This is currently available on the BMG plate readers: "CLARIOstar", "CLARIOstar Plus with ACU", "FLUOstar Omega", and "PHERAstar FS".
Default Calculation: If an instrument capable of adjusting NumberOfReadings is selected, resolves to 100. Otherwise resolves to Null
Pattern Description: Greater than or equal to 1 and less than or equal to 200 in increments of 1 or Null.
ReadDirection
Indicate the plate path the instrument will follow as it measures absorbance in each well, for instance reading all wells in a row before continuing on to the next row (Row).
Figure 3.2: Use the ReadDirection option to control how the plate reader scans the plate during each read cycle. Choosing a more efficient path will lead to a shorter DetectionInterval. Also note that you may want to consider dripping injectors if you're working with low viscosity injection samples.
Default Calculation: Resolves to Row if a plate reader capable of adjusting read direction is selected.
Optics
Wavelength
Default Calculation: Automatically resolves to the shortest wavelength specified in the input samples' ExtinctionCoefficients field, and 260 Nanometer if that field is not populated.
Pattern Description: Greater than or equal to 200 nanometers and less than or equal to 1000 nanometers.
Quantification
QuantificationAnalyte
Default Calculation: Automatically set to the first value in the Analytes field of the input sample, or, if not populated, to the first analyte in the Composition field of the input sample.
Pattern Description: An object of type or subtype Model[Molecule], Model[Molecule, cDNA], Model[Molecule, Oligomer], Model[Molecule, Transcript], Model[Molecule, Protein], Model[Molecule, Protein, Antibody], Model[Molecule, Carbohydrate], Model[Molecule, Polymer], Model[Resin], Model[Resin, SolidPhaseSupport], Model[Lysate], Model[ProprietaryFormulation], Model[Virus], Model[Cell], Model[Cell, Mammalian], Model[Cell, Bacteria], Model[Cell, Yeast], Model[Tissue], Model[Material], or Model[Species] or Null.
QuantifyConcentration
Indicates if the concentration of the samples should be determined. When using the VariablePathlength MeasurementStrategy, concentration is calculated directly from the slope of the absorbance vs. pathlength plot and the extinction coefficient of the analyte.
Default Calculation: Automatically resolves to True if QuantificationWavelength is specified and calling ExperimentAbsorbanceSpectroscopy, and resolves to False if calling ExperimentAbsorbanceIntensity.
Variable Pathlength
SlopeMeasurementMode
When using the VariablePathlength MeasurementStrategy, indicates how the pathlengths for the slope measurement are chosen. FixedSweep collects absorbance at a deterministic series of pathlengths defined by MinPathlength, MaxPathlength, and PathlengthStepSize (or NumberOfPathlengthPoints). QuickSlope instead searches the candidate pathlengths in SearchPathlengths and automatically selects the pathlength that produces an absorbance nearest TargetAbsorbance, which is well suited to samples whose concentration is not known in advance.
Default Calculation: When using the VariablePathlength MeasurementStrategy, automatically set to QuickSlope if SearchPathlengths or TargetAbsorbance is specified, and to FixedSweep otherwise.
VariablePathlengthVessel
When using the VariablePathlength MeasurementStrategy, indicates the type of vessel used to hold the sample during measurement. The vessel type determines the maximum achievable pathlength and the minimum required sample volume. MicroQuartz vessels support up to 5 mm pathlength with 60 Microliter, SmallQuartz and SmallCOC (Cyclic olefin copolymer) vessels support up to 5 mm pathlength with 120 Microliter, and LargeQuartz vessels support up to 15 Millimeter pathlength with 2 Milliliter.
Default Calculation: When using the VariablePathlength MeasurementStrategy, automatically set based on the MaxPathlength and available sample volume. If MaxPathlength is greater than 5 Millimeter, set to LargeQuartz. Otherwise, set based on sample volume: MicroQuartz if volume is less than or equal to 60 Microliter, SmallCOC otherwise.
VariablePathlengthSampleVolume
When using the VariablePathlength MeasurementStrategy, indicates the volume of sample transferred by micropipette into the VariablePathlengthVessel immediately before the measurement. The volume must be sufficient to reach the deepest requested pathlength in the resolved vessel and also informs which vessel is selected.
Default Calculation: When using the VariablePathlength MeasurementStrategy, automatically set to the minimum volume required to reach the effective maximum pathlength in the resolved VariablePathlengthVessel per the SoloVPE PLUS Sample Volume Help Sheet (60 Microliter for MicroQuartz, 120 Microliter for SmallQuartz and SmallCOC, and 2.4 Milliliter for LargeQuartz), capped by the available sample volume.
Pattern Description: Greater than or equal to 1 microliter and less than or equal to 3 milliliters or Null.
MinPathlength
When using the VariablePathlength MeasurementStrategy with the FixedSweep SlopeMeasurementMode, indicates the lower bound of the pathlength range over which the instrument sweeps to collect absorbance data points for slope calculation. The pathlength is the distance from the tip of the Fibrette Optical Component to the bottom of the sample vessel.
Default Calculation: When using the FixedSweep SlopeMeasurementMode, automatically set to 0.01 Millimeter; set to Null when the SlopeMeasurementMode is QuickSlope.
Pattern Description: Greater than or equal to 0.002 millimeters and less than or equal to 15 millimeters or Null.
MaxPathlength
When using the VariablePathlength MeasurementStrategy with the FixedSweep SlopeMeasurementMode, indicates the upper bound of the pathlength range over which the instrument sweeps to collect absorbance data points for slope calculation. The maximum achievable pathlength depends on the VariablePathlengthVessel: 5 Millimeter for the MicroQuartz, SmallQuartz, and SmallCOC vessels, and 15 Millimeter for LargeQuartz vessels.
Default Calculation: When using the FixedSweep SlopeMeasurementMode, automatically set to the maximum pathlength supported by the resolved VariablePathlengthVessel; set to Null when the SlopeMeasurementMode is QuickSlope.
Pattern Description: Greater than or equal to 0.002 millimeters and less than or equal to 15 millimeters or Null.
PathlengthStepSize
When using the VariablePathlength MeasurementStrategy with the FixedSweep SlopeMeasurementMode, indicates the distance increment between successive pathlength positions during the slope measurement sweep. Smaller step sizes produce more data points and higher resolution slope calculations but increase measurement time.
Default Calculation: When using the FixedSweep SlopeMeasurementMode, automatically set to 0.05 Millimeter; set to Null when the SlopeMeasurementMode is QuickSlope.
Pattern Description: Greater than or equal to 0.002 millimeters and less than or equal to 5 millimeters or Null.
Programmatic Pattern: (RangeP[$MinVariablePathlengthStepSize, $MaxVariablePathlengthStepSize] | Automatic) | Null
NumberOfPathlengthPoints
When using the VariablePathlength MeasurementStrategy, indicates the number of discrete pathlength data points collected for the slope calculation. Under the FixedSweep SlopeMeasurementMode these are the positions swept between MinPathlength and MaxPathlength; under the QuickSlope SlopeMeasurementMode these are the data points collected at the automatically selected pathlength.
Default Calculation: When using the FixedSweep SlopeMeasurementMode, automatically calculated from MinPathlength, MaxPathlength, and PathlengthStepSize. When using the QuickSlope SlopeMeasurementMode, automatically set to 5.
Pattern Description: Greater than or equal to 3 and less than or equal to 7500 in increments of 1 or Null.
Programmatic Pattern: (RangeP[$MinVariablePathlengthPoints, $MaxVariablePathlengthPoints, 1] | Automatic) | Null
SearchPathlengths
When using the VariablePathlength MeasurementStrategy with the QuickSlope SlopeMeasurementMode, indicates the candidate pathlengths that the instrument searches through, selecting the one whose absorbance is nearest TargetAbsorbance as the basis for the slope measurement.
Default Calculation: When using the QuickSlope SlopeMeasurementMode, automatically set to the standard descending search pathlengths supported by the resolved VariablePathlengthVessel; set to Null when the SlopeMeasurementMode is FixedSweep.
Pattern Description: List of one or more greater than or equal to 0.002 millimeters and less than or equal to 15 millimeters entries or Null.
Programmatic Pattern: ({RangeP[$MinVariablePathlength, $MaxVariablePathlength]..} | Automatic) | Null
TargetAbsorbance
When using the VariablePathlength MeasurementStrategy with the QuickSlope SlopeMeasurementMode, indicates the absorbance the instrument aims for when selecting the measurement pathlength from SearchPathlengths. The pathlength whose measured absorbance is nearest this value is used for the slope calculation.
Default Calculation: When using the QuickSlope SlopeMeasurementMode, automatically set to 1.0 AbsorbanceUnit; set to Null when the SlopeMeasurementMode is FixedSweep.
Pattern Description: Greater than or equal to 0.01 AbsorbanceUnit and less than or equal to 100 AbsorbanceUnit or Null.
AveragingTime
When using the VariablePathlength MeasurementStrategy, indicates how long the spectrophotometer collects data at each wavelength per pathlength point. Longer averaging times improve signal-to-noise ratio at the cost of increased total measurement time. The Cary 60 Xenon flash lamp pulses at 80 Hz, so an averaging time of 0.1 Second corresponds to 8 lamp flashes.
Default Calculation: When using the VariablePathlength MeasurementStrategy, automatically set to 0.1 Second.
Pattern Description: Greater than or equal to 0.0125 seconds and less than or equal to 999 seconds or Null.
ScatterCorrection
When using the VariablePathlength MeasurementStrategy, indicates the algorithm the SoloVPE+ uses to subtract the absorbance contribution from light scattering (for example turbidity or particulates) before the slope is calculated. SingleWavelength subtracts the absorbance measured at ScatterCorrectionPrimaryWavelength, a wavelength where the analyte is expected to have minimal absorbance. DualWavelength fits a line through the absorbances at ScatterCorrectionPrimaryWavelength and ScatterCorrectionSecondaryWavelength and projects it to the measurement wavelength to estimate the scatter contribution.
ScatterCorrectionPrimaryWavelength
When using the VariablePathlength MeasurementStrategy with ScatterCorrection, indicates the wavelength at which absorbance is measured to estimate the light-scattering contribution. For SingleWavelength scatter correction this absorbance is subtracted directly; for DualWavelength scatter correction it is the first of the two points used to fit the scatter line. This should be a wavelength where the analyte of interest is expected to have minimal absorbance.
Pattern Description: Greater than or equal to 200 nanometers and less than or equal to 1000 nanometers or Null.
ScatterCorrectionSecondaryWavelength
When using the VariablePathlength MeasurementStrategy with DualWavelength ScatterCorrection, indicates the second wavelength used together with ScatterCorrectionPrimaryWavelength to fit the line that estimates the light-scattering contribution at the measurement wavelength. Not used for SingleWavelength scatter correction.
Pattern Description: Greater than or equal to 200 nanometers and less than or equal to 1000 nanometers or Null.
VariablePathlengthMix
When using the VariablePathlength MeasurementStrategy, indicates whether the sample is mixed immediately before it is transferred into the SoloVPE+ vessel for measurement.
Default Calculation: When using the VariablePathlength MeasurementStrategy, automatically set to True.
VariablePathlengthMixType
When using the VariablePathlength MeasurementStrategy with VariablePathlengthMix, the style of motion used to mix the sample before it is transferred into the SoloVPE+ vessel.
Default Calculation: When VariablePathlengthMix is True and none of VariablePathlengthMixTime, VariablePathlengthMixRate, or VariablePathlengthMixVolume are specified, automatically set to Invert; if any of those are specified the mix type is left to ExperimentMix to infer from them. Null when VariablePathlengthMix is False.
Pattern Description: Roll, Vortex, Sonicate, Pipette, Invert, Stir, Shake, Homogenize, Swirl, Disrupt, or Nutate or Null.
VariablePathlengthMixTime
When using the VariablePathlength MeasurementStrategy with VariablePathlengthMix, the duration of mixing before the sample is transferred into the SoloVPE+ vessel (for mix types that mix for a set time, e.g. Roll or Vortex).
Default Calculation: When VariablePathlengthMix is True, resolved by ExperimentMix from the VariablePathlengthMixType; Null for mix types that do not mix for a set duration.
VariablePathlengthMixRate
When using the VariablePathlength MeasurementStrategy with VariablePathlengthMix, the rate at which the sample is mixed before it is transferred into the SoloVPE+ vessel (for mix types that mix at a set rate).
Default Calculation: When VariablePathlengthMix is True, resolved by ExperimentMix from the VariablePathlengthMixType; Null for mix types that do not mix at a set rate.
Programmatic Pattern: ((Null | (RangeP[$MinMixRate, $MaxMixRate] | RangeP[0*GravitationalAcceleration, 100*GravitationalAcceleration])) | Automatic) | Null
VariablePathlengthNumberOfMixes
When using the VariablePathlength MeasurementStrategy with VariablePathlengthMix, the number of discrete mixing motions (e.g. inversions, or pipette aspirate/dispense cycles) performed before the sample is transferred into the SoloVPE+ vessel.
Default Calculation: When VariablePathlengthMix is True, resolved by ExperimentMix from the VariablePathlengthMixType and the other mix options (not given a fixed default); Null for mix types that do not use a mix count.
Pattern Description: Greater than or equal to 1 and less than or equal to 50 in increments of 1 or Null.
VariablePathlengthMixVolume
When using the VariablePathlength MeasurementStrategy with Pipette VariablePathlengthMixType, the volume repeatedly aspirated and dispensed to mix the sample before it is transferred into the SoloVPE+ vessel.
Default Calculation: When VariablePathlengthMix is True and VariablePathlengthMixType is Pipette, resolved by ExperimentMix; Null otherwise.
Pattern Description: Greater than or equal to 0.5 microliters and less than or equal to 50 milliliters or Null.
Injections
PrimaryInjectionSample
The sample to be injected in the first round of injections in order to introduce a time sensitive reagent/sample into the plate before/during absorbance measurement. The corresponding injection times and volumes can be set with PrimaryInjectionTime and PrimaryInjectionVolume.
Pattern Description: An object of type or subtype Object[Sample] or Model[Sample] or a prepared sample or Null.
PrimaryInjectionVolume
Pattern Description: Greater than or equal to 0.5 microliters and less than or equal to 300 microliters or Null.
SecondaryInjectionSample
The sample to be injected in the second round of injections. Set the corresponding injection times and volumes with SecondaryInjectionTime and SecondaryInjectionVolume.
Pattern Description: An object of type or subtype Object[Sample] or Model[Sample] or a prepared sample or Null.
SecondaryInjectionVolume
Pattern Description: Greater than or equal to 0.5 microliters and less than or equal to 300 microliters or Null.
PrimaryInjectionFlowRate
The speed at which to transfer injection samples into the assay plate in the first round of injections.
Pattern Description: 430 microliters per second, 400 microliters per second, 350 microliters per second, 300 microliters per second, 260 microliters per second, 220 microliters per second, 190 microliters per second, 170 microliters per second, 150 microliters per second, 135 microliters per second, 115 microliters per second, 100 microliters per second, 85 microliters per second, 65 microliters per second, or 50 microliters per second or Null.
SecondaryInjectionFlowRate
The speed at which to transfer injection samples into the assay plate in the second round of injections.
Pattern Description: 430 microliters per second, 400 microliters per second, 350 microliters per second, 300 microliters per second, 260 microliters per second, 220 microliters per second, 190 microliters per second, 170 microliters per second, 150 microliters per second, 135 microliters per second, 115 microliters per second, 100 microliters per second, 85 microliters per second, 65 microliters per second, or 50 microliters per second or Null.
InjectionSampleStorageCondition
The non-default conditions under which any injection samples used by this experiment are stored after the protocol is completed.
Pattern Description: {AmbientStorage, EnclosedAmbientStorage, Refrigerator, Freezer, DeepFreezer, CryogenicStorage, YeastIncubation, YeastShakingIncubation, BacterialIncubation, BacterialShakingIncubation, MammalianIncubation, ViralIncubation, CrystalIncubation, AcceleratedTesting, IntermediateTesting, LongTermTesting, UVVisLightTesting} or Disposal or Null.
Data Processing
BlankAbsorbance
For each members of SamplesIn, indicates if a corresponding blank measurement, which consists of a separate container (well, chamber, or cuvette) than SampleLink, will be performed, prior to measuring the absorbance of samples. If using Cuvettes, the BlankAbsorbance will be read at the same time as the SampleLink.
Default Calculation: Automatically set to False when MeasurementStrategy is VariablePathlength, since the SoloVPE+ slope measurement removes background from the fitted intercept rather than from a separate blank reading; otherwise set to True.
Blanks
The object or source used to generate a blank sample (i.e. buffer only, water only, etc.) whose absorbance is subtracted as background from the absorbance readings of the SamplesIn to take account for any artifacts.
Default Calculation: Automatically set to Null if BlankMeasurement is False. Otherwise, automatically set to the value of Solvent in SamplesIn. If Solvent not specified, set to Model[Sample, "Milli-Q water"].
Pattern Description: An object of type or subtype Model[Sample] or Object[Sample] or a prepared sample or Null.
BlankVolumes
The amount of liquid of the Blank that should be transferred out and used to blank measurements. Set BlankVolume to Null to indicate blanks should be read inside their current containers.
Default Calculation: If BlankMeasurement is True, automatically set to the value of AssayVolume if that was specified, or maximum volume of the container otherwise.
Pattern Description: Greater than or equal to 1 microliter and less than or equal to 4000 microliters or Null.
Sampling
SamplingDistance
Default Calculation: Automatically resolves to Null if SamplingPattern is set to Center otherwise resolves to 80% of the diameter of the well.
Pattern Description: Greater than or equal to 1 millimeter and less than or equal to 6 millimeters or Null.
SamplingDimension
Specifies the size of the grid used for Matrix sampling. For example SamplingDimension->5 will scan a 5 x 5 grid.
SamplingPattern
Figure 3.7: Ring sampling allows multiple measurements over a band with a specified diameter. The specified number of flashes will be equally divided over the ring and a higher number will yield to increased sampling (as seen in A). The average value of all measurements will be returned as a single data point. Spiral sampling follows the same principle as ring sampling, but covers a larger part of the well as it takes spiraling inward measurements. Again the number of flashes determines if the well is highly sampled (A) or lightly (B). Use Matrix sampling to scan over a NxN grid of points. Note that points on the border of the well will not be measured.
Default Calculation: When using the BMG plate readers, automatically set to Matrix if SamplingDimension is specified or Ring if SamplingDistance is specified. Otherwise set to Center.
Model Input
PreparedModelContainer
Indicates the container in which a Model[Sample] specified as input to the experiment function will be prepared.
Default Calculation: If PreparedModelAmount is set to All and when the input model has a product associated with both Amount and DefaultContainerModel populated, automatically set to the DefaultContainerModel value in the product. Otherwise set to Model[Container, Vessel, "2mL Tube"].
PreparedModelAmount
Indicates the amount of a Model[Sample] specified as input to the experiment function that will be prepared in the PreparedModelContainer. When set to All and the input model sample is not preparable, the entire amount of the input model sample that comes from one of the Products is prepared. The selected product must have both Amount and DefaultContainerModel populated, and it must not be a KitProduct. When set to All and the input model is preparable such as water, 1 Milliliter of the input model sample is prepared.
Programmatic Pattern: ((RangeP[1*Microliter, 20*Liter] | RangeP[1*Milligram, 20*Kilogram] | GreaterP[0*Unit, 1*Unit] | GreaterP[0., 1.] | All) | Automatic) | Null
Post Experiment
SamplesInStorageCondition
The non-default conditions under which the SamplesIn of this experiment should be stored after the protocol is completed. If left unset, SamplesIn will be stored according to their current StorageCondition.
Pattern Description: {AmbientStorage, EnclosedAmbientStorage, Refrigerator, Freezer, DeepFreezer, CryogenicStorage, YeastIncubation, YeastShakingIncubation, BacterialIncubation, BacterialShakingIncubation, MammalianIncubation, ViralIncubation, CrystalIncubation, AcceleratedTesting, IntermediateTesting, LongTermTesting, UVVisLightTesting} or Disposal or Null.
SamplesOutStorageCondition
The non-default conditions under which any new samples generated by this experiment should be stored after the protocol is completed. If left unset, the new samples will be stored according to their Models' DefaultStorageCondition.
Pattern Description: {AmbientStorage, EnclosedAmbientStorage, Refrigerator, Freezer, DeepFreezer, CryogenicStorage, YeastIncubation, YeastShakingIncubation, BacterialIncubation, BacterialShakingIncubation, MammalianIncubation, ViralIncubation, CrystalIncubation, AcceleratedTesting, IntermediateTesting, LongTermTesting, UVVisLightTesting} or Disposal or Null.
Standards
Standards
The reference samples with known absorbance to run in parallel with the unknown samples, often used to check internal measurement consistency.
Pattern Description: An object of type or subtype Model[Sample] or Object[Sample] or a prepared sample or Null.
StandardVolumes
The amount of liquid of the Standards that should be transferred out and used to perform standard measurements.
Default Calculation: If Standards is specified, automatically set to the value of AssayVolume if that was specified, or maximum volume of the container otherwise.
Pattern Description: Greater than or equal to 1 microliter and less than or equal to 4000 microliters or Null.
StandardBlanks
The object or source used to generate a blank sample (i.e. buffer only, water only, etc.) whose absorbance is subtracted as background from the absorbance readings of the Standards to take account for any artifacts.
Pattern Description: An object of type or subtype Model[Sample] or Object[Sample] or a prepared sample or Null.
StandardBlankVolumes
The amount of liquid of the StandardBlanks that should be transferred out and used to blank measurements.
Default Calculation: If Standards is specified, automatically set to the first value of BlankVolumes if that was specified, or maximum volume of the container otherwise.
Pattern Description: Greater than or equal to 1 microliter and less than or equal to 4000 microliters or Null.
StandardWavelength
Default Calculation: Automatically resolves to the first value in Wavelength option for the samples.
Pattern Description: Greater than or equal to 200 nanometers and less than or equal to 1000 nanometers or Null.
Post Processing
ImageMicrofluidicPlate
When using the Microfluidic plate readers, indicates when the Microfluidic Chips containing the loaded samples are imaged. PreRead indicates imaging occurs before the Microfluidic Chips are analyzed on the Instrument. PostRead indicates imaging occurs after the Microfluidic Chips are analyzed on the Instrument. All indicates imaging occurs both before and after the chips are analyzed on the instrument.
Sample Prep Options
Sample Preparation
PreparatoryUnitOperations
Specifies a sequence of transferring, aliquoting, consolidating, or mixing of new or existing samples before the main experiment. These prepared samples can be used in the main experiment by referencing their defined name. For more information, please reference the documentation for ExperimentSamplePreparation.
Pattern Description: List of one or more unit Operation ManualSamplePreparation or RoboticSamplePreparation or unit Operation must match SamplePreparationP entries or Null.
Programmatic Pattern: {((ManualSamplePreparationMethodP | RoboticSamplePreparationMethodP) | SamplePreparationP)..} | Null
Preparatory Incubation
Incubate
Indicates if the SamplesIn should be incubated at a fixed temperature prior to starting the experiment or any aliquoting. Sample Preparation occurs in the order of Incubation, Centrifugation, Filtration, and then Aliquoting (if specified).
Default Calculation: Resolves to True if any of the corresponding Incubation options are set. Otherwise, resolves to False.
IncubationTemperature
Temperature at which the SamplesIn should be incubated for the duration of the IncubationTime prior to starting the experiment.
Pattern Description: Ambient or greater than or equal to -20 degrees Celsius and less than or equal to 500 degrees Celsius or Null.
Programmatic Pattern: ((Ambient | RangeP[$MinIncubationTemperature, $MaxIncubationTemperature]) | Automatic) | Null
IncubationTime
Duration for which SamplesIn should be incubated at the IncubationTemperature, prior to starting the experiment.
Mix
Default Calculation: Automatically resolves to True if any Mix related options are set. Otherwise, resolves to False.
MixType
Default Calculation: Automatically resolves based on the container of the sample and the Mix option.
Pattern Description: Roll, Vortex, Sonicate, Pipette, Invert, Stir, Shake, Homogenize, Swirl, Disrupt, or Nutate or Null.
MixUntilDissolved
Indicates if the mix should be continued up to the MaxIncubationTime or MaxNumberOfMixes (chosen according to the mix Type), in an attempt dissolve any solute. Any mixing/incubation will occur prior to starting the experiment.
Default Calculation: Automatically resolves to True if MaxIncubationTime or MaxNumberOfMixes is set.
MaxIncubationTime
Maximum duration of time for which the samples will be mixed while incubated in an attempt to dissolve any solute, if the MixUntilDissolved option is chosen. This occurs prior to starting the experiment.
Default Calculation: Automatically resolves based on MixType, MixUntilDissolved, and the container of the given sample.
IncubationInstrument
Default Calculation: Automatically resolves based on the options Mix, Temperature, MixType and container of the sample.
Pattern Description: An object of type or subtype Model[Instrument, Roller], Model[Instrument, OverheadStirrer], Model[Instrument, Vortex], Model[Instrument, Shaker], Model[Instrument, BottleRoller], Model[Instrument, Roller], Model[Instrument, Sonicator], Model[Instrument, HeatBlock], Model[Instrument, Homogenizer], Model[Instrument, Disruptor], Model[Instrument, Nutator], Model[Instrument, Thermocycler], Model[Instrument, EnvironmentalChamber], Model[Instrument, Pipette], Object[Instrument, Roller], Object[Instrument, OverheadStirrer], Object[Instrument, Vortex], Object[Instrument, Shaker], Object[Instrument, BottleRoller], Object[Instrument, Roller], Object[Instrument, Sonicator], Object[Instrument, HeatBlock], Object[Instrument, Homogenizer], Object[Instrument, Disruptor], Object[Instrument, Nutator], Object[Instrument, Thermocycler], Object[Instrument, EnvironmentalChamber], or Object[Instrument, Pipette] or Null.
AnnealingTime
Minimum duration for which the SamplesIn should remain in the incubator allowing the system to settle to room temperature after the IncubationTime has passed but prior to starting the experiment.
IncubateAliquotContainer
The desired type of container that should be used to prepare and house the incubation samples which should be used in lieu of the SamplesIn for the experiment.
Programmatic Pattern: ((ObjectP[Model[Container]] | {GreaterEqualP[1, 1] | (Automatic | Null), (ObjectP[{Model[Container], Object[Container]}] | _String) | Automatic}) | Automatic) | Null
IncubateAliquotDestinationWell
The desired position in the corresponding IncubateAliquotContainer in which the aliquot samples will be placed.
Default Calculation: Automatically resolves to A1 in containers with only one position. For plates, fills wells in the order provided by the function AllWells.
IncubateAliquot
The amount of each sample that should be transferred from the SamplesIn into the IncubateAliquotContainer when performing an aliquot before incubation.
Default Calculation: Automatically set as the smaller between the current sample volume and the maximum volume of the destination container.
Pattern Description: All or greater than or equal to 1 microliter and less than or equal to 20 liters or Null.
Preparatory Centrifugation
Centrifuge
Indicates if the SamplesIn should be centrifuged prior to starting the experiment or any aliquoting. Sample Preparation occurs in the order of Incubation, Centrifugation, Filtration, and then Aliquoting (if specified).
Default Calculation: Resolves to True if any of the corresponding Centrifuge options are set. Otherwise, resolves to False.
CentrifugeInstrument
Pattern Description: An object of type or subtype Model[Instrument, Centrifuge] or Object[Instrument, Centrifuge] or Null.
Programmatic Pattern: (ObjectP[{Model[Instrument, Centrifuge], Object[Instrument, Centrifuge]}] | Automatic) | Null
CentrifugeIntensity
The rotational speed or the force that will be applied to the samples by centrifugation prior to starting the experiment.
Pattern Description: Greater than 0 revolutions per minute or greater than 0 standard accelerations due to gravity on the surface of the earth or Null.
Programmatic Pattern: ((GreaterP[0*RPM] | GreaterP[0*GravitationalAcceleration]) | Automatic) | Null
CentrifugeTime
CentrifugeTemperature
The temperature at which the centrifuge chamber should be held while the samples are being centrifuged prior to starting the experiment.
Pattern Description: Ambient or greater than or equal to -10 degrees Celsius and less than or equal to 40 degrees Celsius or Null.
CentrifugeAliquotContainer
The desired type of container that should be used to prepare and house the centrifuge samples which should be used in lieu of the SamplesIn for the experiment.
Programmatic Pattern: ((ObjectP[Model[Container]] | {GreaterEqualP[1, 1] | (Automatic | Null), (ObjectP[{Model[Container], Object[Container]}] | _String) | Automatic}) | Automatic) | Null
CentrifugeAliquotDestinationWell
The desired position in the corresponding AliquotContainer in which the aliquot samples will be placed.
Default Calculation: Automatically resolves to A1 in containers with only one position. For plates, fills wells in the order provided by the function AllWells.
CentrifugeAliquot
The amount of each sample that should be transferred from the SamplesIn into the CentrifugeAliquotContainer when performing an aliquot before centrifugation.
Default Calculation: Automatically set as the smaller between the current sample volume and the maximum volume of the destination container.
Pattern Description: All or greater than or equal to 1 microliter and less than or equal to 20 liters or Null.
Preparatory Filtering
Filtration
Indicates if the SamplesIn should be filter prior to starting the experiment or any aliquoting. Sample Preparation occurs in the order of Incubation, Centrifugation, Filtration, and then Aliquoting (if specified).
Default Calculation: Resolves to True if any of the corresponding Filter options are set. Otherwise, resolves to False.
FiltrationType
Default Calculation: Will automatically resolve to a filtration type appropriate for the volume of sample being filtered.
FilterInstrument
Default Calculation: Will automatically resolved to an instrument appropriate for the filtration type.
Pattern Description: An object of type or subtype Model[Instrument, FilterBlock], Object[Instrument, FilterBlock], Model[Instrument, PeristalticPump], Object[Instrument, PeristalticPump], Model[Instrument, VacuumPump], Object[Instrument, VacuumPump], Model[Instrument, Centrifuge], Object[Instrument, Centrifuge], Model[Instrument, SyringePump], or Object[Instrument, SyringePump] or Null.
Programmatic Pattern: (ObjectP[{Model[Instrument, FilterBlock], Object[Instrument, FilterBlock], Model[Instrument, PeristalticPump], Object[Instrument, PeristalticPump], Model[Instrument, VacuumPump], Object[Instrument, VacuumPump], Model[Instrument, Centrifuge], Object[Instrument, Centrifuge], Model[Instrument, SyringePump], Object[Instrument, SyringePump]}] | Automatic) | Null
Filter
The filter that should be used to remove impurities from the SamplesIn prior to starting the experiment.
Default Calculation: Will automatically resolve to a filter appropriate for the filtration type and instrument.
Pattern Description: An object of type or subtype Model[Container, Plate, Filter], Model[Container, Vessel, Filter], or Model[Item, Filter] or Null.
Programmatic Pattern: (ObjectP[{Model[Container, Plate, Filter], Model[Container, Vessel, Filter], Model[Item, Filter]}] | Automatic) | Null
FilterMaterial
The membrane material of the filter that should be used to remove impurities from the SamplesIn prior to starting the experiment.
Default Calculation: Resolves to an appropriate filter material for the given sample is Filtration is set to True.
Pattern Description: Cellulose, Cotton, Polyethylene, Polypropylene, PTFE, wwPTFE, Nylon, PES, PLUS, PVDF, GlassFiber, GHP, UHMWPE, EPDM, DuraporePVDF, GxF, ZebaDesaltingResin, NickelResin, AgaroseResin, CobaltResin, Silica, HLB, AnoporeAlumina, or C18 or Null.
PrefilterMaterial
The material from which the prefilter filtration membrane should be made of to remove impurities from the SamplesIn prior to starting the experiment.
Pattern Description: Cellulose, Cotton, Polyethylene, Polypropylene, PTFE, wwPTFE, Nylon, PES, PLUS, PVDF, GlassFiber, GHP, UHMWPE, EPDM, DuraporePVDF, GxF, ZebaDesaltingResin, NickelResin, AgaroseResin, CobaltResin, Silica, HLB, AnoporeAlumina, or C18 or Null.
FilterPoreSize
The pore size of the filter that should be used when removing impurities from the SamplesIn prior to starting the experiment.
Default Calculation: Resolves to an appropriate filter pore size for the given sample is Filtration is set to True.
Pattern Description: 0.008 micrometers, 0.02 micrometers, 0.1 micrometers, 0.2 micrometers, 0.22 micrometers, 0.45 micrometers, 1 micrometer, 1. micrometer, 1.1 micrometers, 2.5 micrometers, 6 micrometers, 6. micrometers, 10 micrometers, 10. micrometers, 20 micrometers, 20. micrometers, 30 micrometers, 30. micrometers, 35 micrometers, 35. micrometers, 45 micrometers, 45. micrometers, 70 micrometers, 70. micrometers, 100 micrometers, or 100. micrometers or Null.
PrefilterPoreSize
The pore size of the filter; all particles larger than this should be removed during the filtration.
Pattern Description: 0.008 micrometers, 0.02 micrometers, 0.1 micrometers, 0.2 micrometers, 0.22 micrometers, 0.45 micrometers, 1 micrometer, 1. micrometer, 1.1 micrometers, 2.5 micrometers, 6 micrometers, 6. micrometers, 10 micrometers, 10. micrometers, 20 micrometers, 20. micrometers, 30 micrometers, 30. micrometers, 35 micrometers, 35. micrometers, 45 micrometers, 45. micrometers, 70 micrometers, 70. micrometers, 100 micrometers, or 100. micrometers or Null.
FilterSyringe
Default Calculation: Resolves to an syringe appropriate to the volume of sample being filtered, if Filtration is set to True.
Pattern Description: An object of type or subtype Model[Container, Syringe] or Object[Container, Syringe] or a prepared sample or Null.
Programmatic Pattern: ((ObjectP[{Model[Container, Syringe], Object[Container, Syringe]}] | _String) | Automatic) | Null
FilterHousing
The filter housing that should be used to hold the filter membrane when filtration is performed using a standalone filter membrane.
Default Calculation: Resolve to an housing capable of holding the size of the membrane being used, if filter with Membrane FilterType is being used and Filtration is set to True.
Pattern Description: An object of type or subtype Model[Instrument, FilterHousing], Object[Instrument, FilterHousing], Model[Instrument, FilterBlock], or Object[Instrument, FilterBlock] or Null.
Programmatic Pattern: (ObjectP[{Model[Instrument, FilterHousing], Object[Instrument, FilterHousing], Model[Instrument, FilterBlock], Object[Instrument, FilterBlock]}] | Automatic) | Null
FilterIntensity
Default Calculation: Will automatically resolve to 2000 GravitationalAcceleration if FiltrationType is Centrifuge and Filtration is True.
Pattern Description: Greater than 0 revolutions per minute or greater than 0 standard accelerations due to gravity on the surface of the earth or Null.
Programmatic Pattern: ((GreaterP[0*RPM] | GreaterP[0*GravitationalAcceleration]) | Automatic) | Null
FilterTime
Default Calculation: Will automatically resolve to 5 Minute if FiltrationType is Centrifuge and Filtration is True.
FilterTemperature
The temperature at which the centrifuge chamber will be held while the samples are being centrifuged during filtration.
Default Calculation: Will automatically resolve to 22 Celsius if FiltrationType is Centrifuge and Filtration is True.
FilterContainerOut
The desired container filtered samples should be produced in or transferred into by the end of filtration, with indices indicating grouping of samples in the same plates, if desired.
Default Calculation: Automatically set as the PreferredContainer for the Volume of the sample. For plates, attempts to fill all wells of a single plate with the same model before using another one.
Pattern Description: An object of type or subtype Model[Container] or Object[Container] or a prepared sample or {Index, Container} or Null.
Programmatic Pattern: (((ObjectP[{Model[Container], Object[Container]}] | _String) | {GreaterEqualP[1, 1] | Automatic, (ObjectP[{Model[Container], Object[Container]}] | _String) | Automatic}) | Automatic) | Null
FilterAliquotDestinationWell
The desired position in the corresponding AliquotContainer in which the aliquot samples will be placed.
Default Calculation: Automatically resolves to A1 in containers with only one position. For plates, fills wells in the order provided by the function AllWells.
FilterAliquotContainer
The desired type of container that should be used to prepare and house the filter samples which should be used in lieu of the SamplesIn for the experiment.
Programmatic Pattern: ((ObjectP[Model[Container]] | {GreaterEqualP[1, 1] | (Automatic | Null), (ObjectP[{Model[Container], Object[Container]}] | _String) | Automatic}) | Automatic) | Null
FilterAliquot
The amount of each sample that should be transferred from the SamplesIn into the FilterAliquotContainer when performing an aliquot before filtration.
Default Calculation: Automatically set as the smaller between the current sample volume and the maximum volume of the destination container.
Pattern Description: All or greater than or equal to 1 microliter and less than or equal to 20 liters or Null.
FilterSterile
Default Calculation: Resolve to False if Filtration is indicated. If sterile filtration is desired, this option must manually be set to True.
Aliquoting
Aliquot
Indicates if aliquots should be taken from the SamplesIn and transferred into new AliquotSamples used in lieu of the SamplesIn for the experiment. Note that if NumberOfReplicates is specified this indicates that the input samples will also be aliquoted that number of times. Note that Aliquoting (if specified) occurs after any Sample Preparation (if specified).
AliquotAmount
Default Calculation: Automatically set as the smaller between the current sample volume and the maximum volume of the destination container if a liquid, or the current Mass or Count if a solid or counted item, respectively.
Programmatic Pattern: ((RangeP[1*Microliter, 20*Liter] | RangeP[1*Milligram, 20*Kilogram] | GreaterP[0*Unit, 1*Unit] | GreaterP[0., 1.] | All) | Automatic) | Null
TargetConcentration
The desired final concentration of analyte in the AliquotSamples after dilution of aliquots of SamplesIn with the ConcentratedBuffer and BufferDiluent which should be used in lieu of the SamplesIn for the experiment.
TargetConcentrationAnalyte
Default Calculation: Automatically set to the first value in the Analytes field of the input sample, or, if not populated, to the first analyte in the Composition field of the input sample, or if none exist, the first identity model of any kind in the Composition field.
Pattern Description: An object of type or subtype Model[Molecule], Model[Molecule, cDNA], Model[Molecule, Oligomer], Model[Molecule, Transcript], Model[Molecule, Protein], Model[Molecule, Protein, Antibody], Model[Molecule, Carbohydrate], Model[Molecule, Polymer], Model[Resin], Model[Resin, SolidPhaseSupport], Model[Lysate], Model[ProprietaryFormulation], Model[Virus], Model[Cell], Model[Cell, Mammalian], Model[Cell, Bacteria], Model[Cell, Yeast], Model[Tissue], Model[Material], or Model[Species] or Null.
AssayVolume
Default Calculation: Automatically determined based on Volume and TargetConcentration option values.
Pattern Description: Greater than or equal to 1 microliter and less than or equal to 20 liters or Null.
ConcentratedBuffer
The concentrated buffer which should be diluted by the BufferDilutionFactor in the final solution (i.e., the combination of the sample, ConcentratedBuffer, and BufferDiluent). The ConcentratedBuffer and BufferDiluent will be combined and then mixed with the sample, where the combined volume of these buffers is the difference between the AliquotAmount and the total AssayVolume.
Pattern Description: An object of type or subtype Model[Sample] or Object[Sample] or a prepared sample or Null.
BufferDilutionFactor
The dilution factor by which the concentrated buffer should be diluted in the final solution (i.e., the combination of the sample, ConcentratedBuffer, and BufferDiluent). The ConcentratedBuffer and BufferDiluent will be combined and then mixed with the sample, where the combined volume of these buffers is the difference between the AliquotAmount and the total AssayVolume.
Default Calculation: If ConcentratedBuffer is specified, automatically set to the ConcentratedBufferDilutionFactor of that sample; otherwise, set to Null.
BufferDiluent
The buffer used to dilute the aliquot sample such that ConcentratedBuffer is diluted by BufferDilutionFactor in the final solution. The ConcentratedBuffer and BufferDiluent will be combined and then mixed with the sample, where the combined volume of these buffers is the difference between the AliquotAmount and the total AssayVolume.
Default Calculation: Automatically resolves to Model[Sample, "Milli-Q water"] if ConcentratedBuffer is specified; otherwise, resolves to Null.
Pattern Description: An object of type or subtype Model[Sample] or Object[Sample] or a prepared sample or Null.
AssayBuffer
The buffer that should be added to any aliquots requiring dilution, where the volume of this buffer added is the difference between the AliquotAmount and the total AssayVolume.
Default Calculation: Automatically resolves to Model[Sample, "Milli-Q water"] if ConcentratedBuffer is not specified; otherwise, resolves to Null.
Pattern Description: An object of type or subtype Model[Sample] or Object[Sample] or a prepared sample or Null.
AliquotSampleStorageCondition
The non-default conditions under which any aliquot samples generated by this experiment should be stored after the protocol is completed.
Pattern Description: {AmbientStorage, EnclosedAmbientStorage, Refrigerator, Freezer, DeepFreezer, CryogenicStorage, YeastIncubation, YeastShakingIncubation, BacterialIncubation, BacterialShakingIncubation, MammalianIncubation, ViralIncubation, CrystalIncubation, AcceleratedTesting, IntermediateTesting, LongTermTesting, UVVisLightTesting} or Disposal or Null.
DestinationWell
The desired position in the corresponding AliquotContainer in which the aliquot samples will be placed.
Default Calculation: Automatically resolves to A1 in containers with only one position. For plates, fills wells in the order provided by the function AllWells.
Pattern Description: Any well from A1 to H12 or list of one or more any well from A1 to H12 or any well from A1 to H12 entries or Null.
Programmatic Pattern: ((WellPositionP | {((Automatic | Null) | WellPositionP)..}) | Automatic) | Null
AliquotContainer
The desired type of container that should be used to prepare and house the aliquot samples, with indices indicating grouping of samples in the same plates, if desired. This option will resolve to be the length of the SamplesIn * NumberOfReplicates.
Default Calculation: Automatically set as the PreferredContainer for the AssayVolume of the sample. For plates, attempts to fill all wells of a single plate with the same model before aliquoting into the next.
Pattern Description: An object of type or subtype Model[Container] or Object[Container] or a prepared sample or Automatic or Null or {Index, Container} or list of one or more an object of type or subtype Model[Container] or Object[Container] or a prepared sample or Automatic or Null entries or list of one or more Automatic or Null or {Index, Container} entries.
Programmatic Pattern: (((ObjectP[{Model[Container], Object[Container]}] | _String) | (Automatic | Null) | {GreaterEqualP[1, 1] | (Automatic | Null), (ObjectP[{Model[Container], Object[Container]}] | _String) | (Automatic | Null)} | {((ObjectP[{Model[Container], Object[Container]}] | _String) | (Automatic | Null))..} | {({GreaterEqualP[1, 1] | (Automatic | Null), (ObjectP[{Model[Container], Object[Container]}] | _String) | (Automatic | Null)} | (Automatic | Null))..}) | Automatic) | Null
AliquotPreparation
Default Calculation: Automatic resolution will occur based on manipulation volumes and container types.
ConsolidateAliquots
Protocol Options
Organizational Information
Template
A template protocol whose methodology should be reproduced in running this experiment. Option values will be inherited from the template protocol, but can be individually overridden by directly specifying values for those options to this Experiment function.
Pattern Description: An object of type or subtype Object[Protocol] or an object of type or subtype of Object[Protocol] with UnresolvedOptions, ResolvedOptions specified or Null.
Programmatic Pattern: (ObjectP[Object[Protocol]] | FieldReferenceP[Object[Protocol], {UnresolvedOptions, ResolvedOptions}]) | Null
Name
A object name which should be used to refer to the output object in lieu of an automatically generated ID number.
Post Experiment
MeasureWeight
Indicates if any solid samples that are modified in the course of the experiment should have their weights measured and updated after running the experiment. Please note that public samples are weighed regardless of the value of this option.
MeasureVolume
Indicates if any liquid samples that are modified in the course of the experiment should have their volumes measured and updated after running the experiment. Please note that public samples are volume measured regardless of the value of this option.
ImageSample
Example Results
A bovine serum albumin (BSA) solution of roughly 47 mg/mL was quantified directly by variable pathlength (slope) spectroscopy on the SoloVPE+ spectrophotometer. Through a standard 10 mm cuvette this sample would absorb about 30 AU at 280 nm, far beyond the linear range of a fixed-pathlength reading, so it would normally have to be diluted at least 20-fold before measurement. Instead, absorbance was measured at a series of pathlengths of only a few micrometers, and the concentration was calculated from the slope of absorbance versus pathlength. A certified 2 mg/mL BSA standard was read before and after the concentrated sample to check the accuracy of the measurement and to look for carryover.
Both samples were prepared within the same protocol. The 2 mg/mL standard was transferred from a bottle of Thermo Scientific Pierce BSA Standard (catalog number 23210), and the concentrated sample was made by dissolving 75 mg of BSA powder in 1.5 mL of Milli-Q water and inverting until dissolved.
The standard was listed before and after the concentrated sample, so that any carryover from the concentrated sample would appear as a shift between the two sets of standard reads. The measurement options and the reason for each are listed below.
The experiment call below prepared both samples and read them in the order standard, concentrated sample, standard.
ExperimentAbsorbanceIntensity[
{"2mg/mL BSA Sample", "50mg/mL BSA Sample", "2mg/mL BSA Sample"},
PreparatoryUnitOperations -> {
LabelSample[Sample -> Model[Sample, "Milli-Q water"], Amount -> 5 Milliliter, Label -> "water source"],
LabelContainer[Container -> {Model[Container, Vessel, "2mL Tube"], Model[Container, Vessel, "2mL Tube"]}, Label -> {"50mg/mL BSA Tube", "2mg/mL BSA Tube"}],
Transfer[
Source -> {Model[Sample, "Bovine Albumin"], "water source", myStandardStock},
Amount -> {75 Milligram, 1.5 Milliliter, 1.5 Milliliter},
Destination -> {"50mg/mL BSA Tube", "50mg/mL BSA Tube", "2mg/mL BSA Tube"},
DestinationLabel -> {"50mg/mL BSA Sample", "50mg/mL BSA Sample", "2mg/mL BSA Sample"}
],
Mix[Sample -> "50mg/mL BSA Sample", MixType -> Invert, NumberOfMixes -> 40, MixUntilDissolved -> True]
},
MeasurementStrategy -> VariablePathlength,
VariablePathlengthVessel -> SmallCOC,
VariablePathlengthMixType -> Invert,
VariablePathlengthNumberOfMixes -> 20,
SlopeMeasurementMode -> QuickSlope,
NumberOfPathlengthPoints -> 10,
Wavelength -> 280 Nanometer,
NumberOfReplicates -> 3,
QuantifyConcentration -> True,
QuantificationAnalyte -> Model[Molecule, Protein, "Bovine Albumin"]
]
Each read produced one data object, in the order of the inputs: three reads of the standard, three of the concentrated sample, then three more of the standard. The data objects were grouped by sample.
The concentrated sample was measured at pathlengths between 2 and 20 µm. Over that range absorbance rose in a straight line with pathlength, and by the Beer–Lambert law the slope of that line is the product of the extinction coefficient and the concentration.
The standard, about 23 times more dilute, was measured at much longer pathlengths, between 1.6 and 3.4 mm, to reach a similar absorbance.
Each data object stored its concentration in micromolar. Multiplying by the molecular weight of BSA gave the mass concentration of each read.
The standard read 2.048 mg/mL on average before the concentrated sample and 2.032 mg/mL after it. The 0.8% difference is within the scatter of the reads themselves, so no carryover from the concentrated sample was seen.
Across all six reads, the standard averaged 2.040 mg/mL with a relative standard deviation of 1.24%, within 2.0% of its certified 2 mg/mL.
The concentrated sample read 47.06 mg/mL on average, with a relative standard deviation of 1.13% across its three reads. When it was prepared, the 75.18 mg of BSA weighed into 1.5 mL of water was recorded as 47.72 mg/mL, so the measurement fell within 1.4% of the prepared concentration without any dilution.
A BSA solution prepared at 47.72 mg/mL was measured at 47.06 mg/mL with a relative standard deviation of 1.13%, using pathlengths of 2 to 20 µm and no dilution. The certified 2 mg/mL standard read before and after it agreed with its certified value to within 2.0%, and the two sets of standard reads agreed with each other to within 1%, showing no carryover from the concentrated sample.
Example Calls
Quantification
If quantifying, it is recommended to use the fixed path length Lunatic plate reader. The specified wavelength will be the one on which the extinction cofficient will be obtained and absorbance will be calculated:
To indicate which component in a mixture will be quantified, specify the QuantificationAnalyte option. If not specified, ExperimentAbsorbanceIntensity will call the Experiment`Private`selectAnalyteFromSample on the input samples to guess what component to quantify:
Set the sample to set as the blank to subtract when quantifying. If not specified, will be set to water:
Injections
To specify injections, use the InjectionSample and InjectionVolume options. The sample and volume options are index matched to the input samples allowing you to control the wells which receive injections and the volumes of those injections. In the example below, 50 Microliter of myInjectionSample1 is injected into each well, and then myInjectionSample2 is injected at different volumes into the first two wells but not the third:
Plate Reader Mixing
Cuvette Acquisition Mixing
Preferred Input Containers
Warnings and Errors
Messages (64)
AbsorbanceSamplingCombinationUnavailable (1)
AbsSpecTooManySamples (1)
AliquotAmountPrecision (1)
AliquotRequired (1)
AmbiguousAnalyte (3)
If the sample has multiple potential analytes and the QuantificationAnalyte option is not specified but we aren't actually quantifying, don't throw an error:
If the sample has multiple potential analytes and the QuantificationAnalyte option is not specified, throw a warning stating that one has been chosen arbitrarily:
If the sample has multiple potential analytes and the QuantificationAnalyte option is specified, do not throw a warning:
BlanksContainSamplesIn (1)
BlankVolumeNotRecommended (1)
CentrifugePrecision (2)
ConcentrationWavelengthMismatch (1)
CoveredInjections (1)
DuplicateName (1)
ExtCoeffNotFound (1)
ExtinctionCoefficientMissing (2)
IncompatibleBlankOptions (4)
IncompatibleStandardOptions (4)
InvalidBlankContainer (1)
InvalidImageMicrofluidicPlate (1)
InvalidMaxLoadingRetries (1)
MixingParametersConflict (1)
MixingParametersRequired (1)
MixingParametersUnneeded (1)
NoACUOnInstrument (1)
ObjectDoesNotExist (7)
Do NOT throw a message if we have a simulated container but a simulation is specified that indicates that it is simulated:
Do NOT throw a message if we have a simulated sample but a simulation is specified that indicates that it is simulated:
Throw a message if we have a container that does not exist (ID form):
Throw a message if we have a container that does not exist (name form):
Throw a message if we have a sample that does not exist (ID form):
Throw a message if we have a sample that does not exist (name form):
Throw an error and return early if an input object doesn't exist:
PlateReaderInjectionsUnsupported (1)
PlateReaderMixingUnsupported (1)
PlateReaderMoatUnsupported (1)
PlateReaderReadDirectionUnsupported (1)
QuantificationRequiresBlanking (1)
ReplicateChipSpace (1)
SampleMustContainQuantificationAnalyte (1)
SamplingPatternMismatch (2)
StandardVolumeNotRecommended (2)
TemperatureIncompatibleWithPlateReader (2)
UnnecessaryBlankTransfer (1)
UnsupportedPlateReader (2)
Possible Issues
Multiple components
If a mixture exists with overlapping extinction coefficients, the calculated concentration may be off because the full absorbance will be attributed to a single component rather than the multiple components of the sample.
Readings outside of instrument detector's absorbance range
If a sample's absorbance exceeds the detection range of the instrument's detector, the Absorbance is recorded as Null in the corresponding Data object, and the AbsorbanceSaturated field is marked as True.
Readings outside of linear range
If the output data is outside of the recommended linear range of the instrument, AnalyzeAbsorbanceQuantification will throw a warning because quantifications may be less reliable.
Incompatible solvents
If the sample is contained in a volatile solvent (say methanol or acetone), the 2.1 μL of solvent will evaporate before any data can be collected.
Unavailable Data on Lunatic instruments
The Lunatic instrument may fail to measure absorbance due to issues with microfluidic chip cuvette loading. The experiment automatically retries the failed samples up to two additional times. If all attempts fail, a Data object with Null Absorbance is reported for the sample, and the UnavailableData field in the Protocol object is set to True.
Last modified on Mon 2 Nov 2026 16:50:37