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1.2.1. UV-Vis Spectrophotometer
There are two types of UV-Vis spectrophotometer.
Colorimeter In a colorimetry, wavelength selection is achieved by using coloured filters that absorb all the wavelengths except certain limited range of wavelengths. For instance, the red filter absorbs almost all other colours except red. This red filter is used to examine blue solutions as these would absorb red light the maximum. The filter used is thus made of a colour complementary to that of test solution. |
Last modified: Wednesday, 7 December 2011, 10:42 AM