. . . . . . "SDN:S26::MAT01991" . "" . . "suspended particulate material 2.5-500um"@en . "accepted"@en . "Solids contained in a sample from any body of water from a puddle to an ocean that have been collected by filtration through a 2.5um pore filter after passing through a 500um screen. This term is used for measurments on the solid in isolation from the water body."@en . . . .