DIN ISO 21528-1:2009 食品和动物饲料的微生物学.肠杆菌科探测和技术用水平法.第1部分:通过预浓缩MPN技术进行计数和检测(ISO 21528-1:2004)
Microbiology of food and animal feeding stuffs - Horizontal methods for the detection and enumeration of Enterobacteriaceae - Part 1: Detection and enumeration by MPN technique with pre-enrichment (ISO 21528-1:2004)