Beer Lambert Law Calculator

Here is an online Beer Lambert Law calculator for you to calculate the absorbance using Beer's Law with ease. Just enter the values of molar absorption coefficient, concentration, and path length to get the result.

Calculate Absorbance using Beer's Law

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Here is an online Beer Lambert Law calculator for you to calculate the absorbance using Beer's Law with ease. Just enter the values of molar absorption coefficient, concentration, and path length to get the result.

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Formula:

Absorbance = Molar Absorption Coefficient x Path Length x Concentration

Beer Lambert Law: The law is also known as Beer's law, Beer–Lambert–Bouguer law or Lambert–Beer law. The law was discovered by Pierre Bouguer before 1729. It is the linear relationship between absorbance and concentration of an absorbing species.
Law Statement: Beer-Lambert Law states that the transmission of a monochromatic light through a substance is logarithmetically related to the product of the concentration, path length (distance that light travels through the material) and the molar extinction coefficient of the substance. Feel free to try this online Beer Lambert Law calculator to calculate the absorbance using Beer's law with ease.

Example

For a substance with molar absorption coefficient 50 m2/mol, concentration 10 mol/L and path length 5 m, the absorbance using beer's lambert law can be calculated as
= 50 x 5 x 10
=2500.

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