Extinction Coefficient Calculator

The Extinction Coefficient Calculator is a tool used to determine the extinction coefficient of a substance or solution. The extinction coefficient, often denoted as ε, is a measure of the absorbance or attenuation of light by a substance.

Formula

The formula to calculate the extinction coefficient is:

Extinction Coefficient (ε) = Absorbance (A) / Path Length (l) * Concentration (C)

Where:

Absorbance (A) is the measure of light absorbed by the substance
Path Length (l) is the distance the light travels through the substance
Concentration (C) is the concentration of the substance in the solution

Example

If the absorbance is 0.5, the path length is 1 cm, and the concentration is 0.1 M, the calculation would be: Extinction Coefficient = 0.5 / 1 * 0.1 = 0.5

Therefore, the extinction coefficient would be 0.5.