The estimation and characterization of plankton populations by pigment analysis. III. A note on the use of Millipore membrane filters in the estimation of plankton pigments.

Collection of plankton samples on AA (aerosol assay) type Millipore membrane filters has been substituted for centrifugation in the method of Richards with Thompson for estimating plankton pigments. Although the filter dissolves in the 90% acetone that is subsequently used for extracting the pigments, its solution does not interfere with the spectrophotometric determination of the chlorophyll and carotenoid components