Spectrophotometer

The spectrophotometer measures the amount of light absorbed at 14 specific wavelengths by liquids contained in reaction cuvettes.

Every two seconds, the reaction tray (RRV) moves cuvettes containing reaction liquid (sample and reagent) in front of a halogen lamp, which sends light through the cuvettes.  All wavelengths are measured each time.

The photometer then measures the absorbance based on the lamp energy and the optical density of the cuvettes. This process is repeated every 14 seconds on an individual cuvette.

A cooling tank maintains the lamp temperature.

The output energy of the halogen lamp is monitored during the cell blank check and after each assay. The system alerts the operator if the lamp performance is abnormal.

Use the Lamp Energy Monitor window to ensure that the halogen lamp is functioning normally.