Measures the absorbance, transmittance, or reflectance spectrum of a sample. Sequential measurements can also be made on multiple samples, each of which can be assigned different measurement parameters. A customizable flowchart can be used to automate the flow of measurement, data processing, saving and reporting functions.
Create a calibration curve using the absorbances of standards with known concentrations, and then use the absorbance for samples with unknown concentrations to interpolate the concentration from the calibration curve. Several peak quantitation methods are included. The calibration curve can be constructed using linear or polynomial fitting with linearity criteria and ‘goodness of fit’ statistics.
Time Course Measurement
Measure changes in absorbance, transmittance, or reflectance over a specified time at a fixed wavelength. This can be used for kinetics measurement or stability testing.
Dual-Wavelength Time Course Measurement
Measure changes in absorbance, transmittance, or reflectance over a specified time at up to two fixed wavelengths. This can be used for kinetics measurement or stability testing.
Fixed Wavelength Measurement
Measure the absorbance, transmittance, or reflectance of a sample at a fixed wavelength. Up to twenty different wavelengths can be used for measurement.
The photometric value in absorbance or transmittance is displayed in analog, digital, or graphical modes.
Parallel Kinetics Measurement
Measures changes in the absorbance, transmittance, or reflectance at a fixed wavelength for a sample(s) over a specified time period, and is designed for use with a multi-cell changer.
Check the functional performance of a UV-Visible/NIR spectrophotometer using a variety of inspection methods, including those required by regulatory compliance. These include wavelength accuracy and repeatability, photometric accuracy and repeatability, resolution, stray light, noise level, and baseline stability and flatness.
This simple performance check of the spectrophotometer can be made regularly by measuring the absorbance spectrum of a holmium standard supplied with the instrument. The statistics are accumulated over a period of time to monitor and ensure continuous optimal operation.