"isotope-labelled tracer addition, azide poisoning, incubation at unspecified light level, filtration"@en . "SDN:S03::S03183" . "false" . . . . . "SDN:S03::S03183" . . "2010-01-10 14:40:58.0" . "SDN:S03::S03183" . "2" . "accepted"@en . . "A dissolved radioactive or stable isotope tracer was added to the sample which was poisoned with azide (to eliminate biological activity), held for a predetermined time at an unstated (usually documented elsewhere) light intensity before filtration to collect the particulate phase."@en . "2" . . . "2010-01-10 14:40:58.0" . . "" .