. . . . . "Absorbance of electromagnetic radiation (499nm wavelength) {light absorbance} by the suspended particulate material >GF/F [pigment phase] by filtration and spectrophotometry on residue before and after NaOCl bleaching and differencing of the measurements"@en . . . . "Unavailable"@en . "SPMPigAbs499" . . . . . . "accepted"@en . "SDN:P01::PIGNA499" . . . . . . . . . . . . . . . .