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Spec 20 Instructions
The Standard Curve

Spec 20 Instructions

The Spec 20 is an instrument that is designed to measure the amount of light which passes through a solution. This can be measured in terms of absorbance of a solution (the amount of light the solution absorbs) or the transmission (the amount of light that passes through a solution). The measured absorbance can be used to determine the concentration of a coloured material in solution.

For information on the relationship between absorbance and concentration, click here.

For details on how to use a Spec 20, click here.

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Created by: Cecilia Yu '07
Maintained by: CarolAnn Paul
Date Created: July 1, 2004
Last Modified: August 25, 2004
Page Expires: August 6, 2006