APC Membrane Filtration*
APC Petrifilm*
APC Pour*
APC Spread Plate*

Method References

3M™ Petrifilm™ Aerobic Count Plate Interpretation Guide (Petrifilm)
AOAC: 990.12, 986.33, 989.10 (Petrifilm)
Standard Methods for the Examination of Dairy Products, 17th Edition
Compendium of Methods for the Microbiological Examination of Foods 5th Edition

Sample Size


Estimated Turn Around Time

72 hours (dry products could take longer depending on validation)

Reporting Unit

cfu/sampled area

Method Description

Samples are prepared and dilutions made. Plated on media and incubated based on product type. Plates are then read and results generated based on countable range.

Additional Information

This procedure enumerates the number of aerobic microbes in a sample using a spread plate, pour plate, or petrifilm method.

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