Figure F10. MPN counts with a microtiter plate. On a deep-well microtiter plate, four different slurry samples were diluted in triplicate down to 1:106. For each sample, a row remained uninoculated as a control. The wells were sealed with a capmat, and the plate was stored in an anoxic bag with an oxygen-consuming catalyst (Anaerocult A, Merck) and an oxygen indicator.