BS EN ISO 6887-1:2017
食物链微生物学.试样制备及用于微生物检验的初始悬浮液和十倍制稀释液.初始悬浮液和十倍制稀释液制备的一般规则
Microbiology of the food chain. Preparation of test samples, initial suspension and decimal dilutions for microbiological examination. General rules for the preparation of the initial suspension and decimal dilutions