. . . . . . . . . . "accepted"@en . . "Spectrophotometric assay following the Lorenzen protocol of acetone extract from particulates on an unspecified filter."@en . "LorSpec_Phae_un" . . "SDN:P01::PHAESPPZ" . . . "Concentration of phaeopigments {pheopigments} per unit volume of the water body [particulate >unknown phase] by filtration, acetone extraction and spectrophotometry and processing following the Lorenzen protocol"@en . . . . . . . . . . . . . . . . . . . . . . . .