Livestock, poultry/animal tissue testing

This standard specifies the method for counting coliforms in food according to the National Food Safety Standard for Microbiological Examination of Food. The first method of this standard is applicable to the counting of coliforms in foods with low coliform content; The second method is applicable to the counting of coliforms in foods with high coliform content. 2 Terminology and Definitions 2.1 Coliforms are aerobic and facultative anaerobic Gram negative non-spore bacteria that can ferment lactose, produce acid and gas under certain cultural conditions. 2.2 Most likely number; MPN is an indirect counting method based on Poisson distribution. 3. Testing principle 3.1 MPN method MPN method is a quantitative detection method that combines statistics and microbiology. After a series of dilutions and cultivation of the sample to be tested, the maximum possible number of coliforms in the sample to be tested is calculated using statistical probability theory based on its lowest dilution without growth and the highest dilution with growth. 3.2 Plate counting method: Escherichia coli ferments lactose in solid culture medium to produce acid, and forms countable red or purple colonies with or without precipitation rings under the action of indicators

Function of testing report:

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BAIJIAN testing process:

1. Telephone communication and confirmation of requirements

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6. If urgent or priority processing is required

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