ChlCalc is a tool for converting absorbance values to the concentrations of chlorophylls, carotenoids, pheophytins, and phycobilins. Choose from 36 systems of simultaneous equations from all major publications on photosynthetic pigment determination by spectrophotometry. The application provides all of the equations, methods for pigment extraction, and all literature references.

The published papers covered include:

Arnon 1949
Smith 1955
Bauer 1958
Vernon 1960
Ziegler 1965
Bennett 1973
Arnon 1974
Beale 1983
Lichtenthaler 1983
Inskeep 1985
Lichtenthaler 1987
Tandeau de Marsac 1988
Stambler 1993
Wellburn 1994

ChlCalc is useful for researchers in any area of photosynthesis with species of algae, cyanobacteria, and plants. These equations include those commonly used in conservation and applied systems such as the standard equations for wastewater and surface water analyses.