TCVN 5518-1-2007 Microbiology of food and animal feeding stuffs.Horizontal methods for the detection and enumeration of Enterobacteriaceae.Part 1: Detection and enumeration by MPN technique with pre-enrichment was changed to TCVN 5518-2-2007 Microbiology of food and animal feeding stuffs.Horizontal methods for the detection and enumeration of Enterobacteriaceae.Part 2: Colony-count method.
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