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3、ology of food and animal feeding stuffs.Horizontal mthod for the enumeration of psychrotrophic microorganisms1 - , - , 6,5 C.2 :ISO 6887-1 Microbiology of food and animal feeding stuffs Preparation of test samples, initialsuspension and decimal dilutions for microbiological examination Part 1: Gener
4、al rules for the preparation ofthe initial suspension and decimal dilutions ( . , - . 1. -)ISO 7218 Microbiology of food and animal feeding stuffs General rules for microbiologicalexaminations ( . - )ISO 8261 Milk and milk products General guidance for the preparation of tests samples, initialsuspen
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