Description
The aerobic plate count is determined by preparing a dilution series of the sample material according to general microbiological principles, followed by pour-plating into an agar medium in Petri dish¬es. Incubate sample(s) under aerobic conditions at either 30 °C for 3 days, 20 °C for 3 days or 6.5 °C for 10 days. The number of viable aerobic microorganisms per milliliter or gram of sample is calculated from the number of colonies counted on selected plates.