Beer's Law

Beer-Lambert's law is the relationship between absorbance, concentration, and path length.

$A = εbc$

• $A =$ absorbance
• $ε =$ molar absorptivity (M^-1cm^-1)
• $b =$ path length (cm)
• $c =$ concentration (M)

• The higher the concentration, the higher the absorbance.
• The longer the path length, the higher the absorbance.