ISO 6887-1:1999 食品和动物饲料的微生物学 用于微生物检验的试验样品的初始悬浮和十倍制稀释的准备 第1部分:初始悬浮和十倍制稀释准备的通用规则
Microbiology of food and animal feeding stuffs - Preparation of test samples, initial suspension and decimal dilutions for microbiological examination - Part 1: General rules for the preparation of the initial suspension and decimal dilutions