ISO 7251:2005/DAmd 1 食品和动物饲料微生物学 假定大肠杆菌检测和计数的水平方法 最可能数技术 修正案 1:包括培养基和试剂的性能测试
Microbiology of food and animal feeding stuffs — Horizontal method for the detection and enumeration of presumptive Escherichia coli — Most probable number technique — Amendment 1: Inclusion of performance testing of culture media and reagents