ACCURATE MICRO-ASSAY FOR MEASURING FILTRATION-RATES OF SMALL INVERTEBRATES USING LATEX BEADS

1. 1. An indirect approach of measuring nitration rates by the clearance of uniform latex (polyvinyltoluene) beads from suspension is described. 2. 2. Aliquots of suspensions are dried at 95°C. These dried samples are stable indefinitely. 3. 3. Dried samples are eventually extracted with dioxane and read spectrophotometrically at 267 mμ. 4. 4. Described approach lends itself to accurate measurements on small suspension feeders in small volumes and to the simultaneous running of multiple experimental chambers. © 1979.