BS EN ISO 6887-5:2020
食物链微生物学 微生物学检查的测试样品、初始悬浮液和十进制稀释液的制备 乳和乳制品制备的具体规则
Microbiology of the food chain. Preparation of test samples, initial suspension and decimal dilutions for microbiological examination - Specific rules for the preparation of milk and milk products