BS EN ISO 6887-4:2017 食物链微生物学.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.杂项产品制备的专门规范
Microbiology of the food chain. Preparation of test samples, initial suspension and decimal dilutions for microbiological examination. Specific rules for the preparation of miscellaneous products