Home > Plate reading > Absorbance readers Visible

Absorbance readers Visible

Absorbance determines the optical density of your product, by measuring how much of the initial (100%) light is transmitted through the sample: the loss in amount of transmitted light is related to the concentration of the molecule of interest.

It is important to know the spectral range for your application as well as the type of optics needed. The choice is between a filter, monochromator or diode array based wavelength selector.

Filters and monochromators select the wavelength prior to the sample; the diode array splits the light after the sample and uses an array of detectors. For sensitive measurement it is advised to work with a system which selects the wavelength prior to the sample, for quick full spectrum measurement and flexibility, a diode array is preferred.

Beside the optics, the type of lamp in the Spectrophotometer is important; it is critical for the wavelength range which is available.

We offer a variety of dedicated Plate readers for measuring absorbance.

Please select the reader of your interest:

Product nameWavelength range Detector Channels Microplate Formats
EZ read 400400 - 750 nmSilicon photodiode196 wells
Zenyth 340340 - 800 nmsilicon photodiode16-384 wells
Expert Plus400 - 800 nm8-channel optical system with self calibration and digital light control896 well
Expert 96400 - 800 nm8-channel optical system with self calibration and digital light control896 well
UVM 340340 - 800 nm2 silicon photodiodes, one for measurement and one for reference112, 24, 48 and 96 well plates (Standard version), 96 and 384 well plates (HD version)