. . . . . . . . . . . "SDN:P01::PIGNA452" . . "Unavailable"@en . "accepted"@en . . . "SPMPigAbs452" . . "Absorbance of electromagnetic radiation (452nm 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 . . . . . . . . . . . . . .