⇒ A colorimeter is based on the photometric technique which states that When a beam of incident light of intensity I 0 passes through a solution, a part of the incident light is reflected (I r), a part is absorbed (I a) and rest of the light is transmitted (I t) A colored solution absorbs all the colors of white light and selectively transmits only one color. This is its own color. ⇒ Absorption of light – Light falling on a colored solution is either absorbed or transmitted. ![]() from the visible spectrum of light of the electromagnetic spectrum. ![]() ⇒ A Colorimeter involves the measurement of Color and is the widely used method for finding the concentration of biochemical compounds. It Measures absorbance and wavelength between 400 to 700 nm (nanometer) i.e.
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