DIN EN ISO 16649-3:2015
食物链的微生物学. β-葡萄糖醛酸阳性大肠杆菌计数的水平方法. 第3部分: 使用5-溴-4-氯-3-吲哚-β-D-葡萄糖苷酸的检测和最大或然数法 (ISO 16649-3-2015); 德文版本EN ISO 16649-3-2015
Microbiology of the food chain - Horizontal method for the enumeration of s-glucuronidase positive Escherichia coli - Part 3: Detection and most probable number technique using 5-bromo-4-chloro-3-indolyl-s-D-glucuronide (ISO 16649-3:2015); German version