5.7.4 Concentrate cell suspension before incubation-The membrane filtration procedure.浓缩细胞悬液 Membrane filter removed and placed in plate Water sample filtered containing the Membrane filter through membrane appropriate Incubation Typical on a filter support filter (0.45 um) medium for 24 hours colonies Membrane with different pore sizes are used to trap different microorganisms. Incubation times for membranes also vary with the medium and microorganism.5.7.4 Concentrate cell suspension before incubation- The membrane filtration procedure. 浓缩细胞悬液 Membrane with different pore sizes are used to trap different microorganisms. Incubation times for membranes also vary with the medium and microorganism