Diffeernt chemcial substanecs abosrb different wavleengths of light. When the cnocentration of the solute is more, it absobrs more light in a specfiic wavelnegth. This is known as Beer-Labmert law.
| Colorimeter |
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2 Otuput |
Different parts
The most importnat parts of a colormieter are:
Fitlers
Different filetrss are used to selcet the waveelngth of light which the solution absrobs the most. This makes the colorimteer more accuarte. The usual wavelegnths used are between 400 and 700 naonmeters. If it is necsesary to use ultraviloet light (below 400 nanmoeters) then the lamp and filters must be cahnged.
Output
The output of the coolrimeter may be shown in garphs or tbales, by an analouge or digiatl meter. The data may be prnited on paper, or stroed in a comptuer. It eihter shows the amuont of light which is asborbed by the soultion, or the amount of light which has psased thruogh the solution.
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