Milk and milk products - General guidance for the preparation of test samples, initial suspensions and decimal dilutions for microbiological examination (ISO 8261:2001); English version of DIN EN ISO 8261
乳和乳制品.微生物检验用试样、初始悬浮液和十进制稀释液制备的一般指南(ISO 8261-2001);德文版EN ISO 8261:2001