Spectrophotometers measure light absorbance in a sample held in a cuvette.

Ultrospec™ 3100 pro is the ideal UV/visible spectrophotometer for the demanding laboratory where bench space is at a premium. 
Product Details...

Amersham Ultrospec 3300 Pro UV/Vis Spectrophotometer 
Product Details...

The DU-530 is a simple but great spectrometer that comes with various built-in programs that are easy to use. 
Product Details...

A multifunctional, single-tube instrument for fluorescence, luminescence and absorbance. 
Product Details...

The TD-700 Laboratory Fluorometer is a compact, low-cost benchtop fluorometer that features a unique multi-assay filter cylinder, wide wavelength range, menu-driven software, and multi-point calibration. 
Product Details...