Beer-Lambert Law: Absorbance 0.3, ε = 3000, 1 cm Cuvette
With absorbance 0.3, ε = 3000 L/mol·cm, and 1 cm path length, the resulting concentration is 0.0001 mol/L.
How to use this tool
- Enter absorbance a, molar absorptivity ε, concentration c and path length l in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your absorbance a and the full breakdown beneath it.
Use this Beer-Lambert preset to solve for the concentration of a solution that shows an absorbance of 0.3 in a standard 1 cm cuvette with ε = 3000 L/mol·cm.
Frequently asked questions
- What is molar absorptivity?
- Also called the molar extinction coefficient (ε), it is a measure of how strongly a substance absorbs light at a given wavelength. Units: L/(mol·cm).
- When does Beer-Lambert law break down?
- At high concentrations (above ~0.01 mol/L) due to molecular interactions, or when the light source is not monochromatic.