Microbiology of the food chain — 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 — Amendment 1: Requirements and guidance on the use of a larger test portion size for qualitative methods
食品链微生物学——微生物检验用试验样品、初始悬浮液和十倍稀释液的制备——第1部分:初始悬浮液及十倍稀释溶液制备的一般规则——修正案1:定性方法中使用较大试验份数的要求和指导