BS EN ISO 6887-1:1999 食品和动物饲料制品微生物学.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 food and animal feeding stuffs. Preparation of test samples, initial suspension and decimal dilutions for microbiological examination. General rules for the preparation of the initial suspension and decimal dilutions