为了检测加标水样中暴露于氯的大肠杆菌，将两种市售确定的底物大肠菌群试验与EC培养基加4-甲基伞形花序基-B-D-葡萄糖醛酸盐（MUG）进行了比较。对检测结果的统计分析表明，自动分析大肠杆菌试验和带有MUG的EC培养基之间在检测大肠杆菌方面没有显著差异。然而，在暴露于游离氯的纯培养研究中，以及将所有数据结合起来时，ColiQuik试验和带有MUG的EC培养基之间的大肠杆菌检测存在显著差异。所有方法均能检测1个cfu/100 mL大肠杆菌。 大肠杆菌。包括41个参考文献和表格。

Two commercially available defined-substrate coliform tests were compared with EC medium plus 4-methylumbelliferyl-B-D- Glucuronide (MUG) for detecting chlorine-exposed Escherichia coli in spiked water samples. Statistical analyses of the test results indicated no significant differences in detection of E. coli between the Autoanalysis Colilert test and EC medium with MUG. There were, however, significant differences in detection of E. coli between the ColiQuik test and EC medium with MUG in the free-chlorine-exposed pure culture studies and when all the data were combined. All methods were capable of detecting 1 cfu/100 mL of E. coli. Includes 41 references, tables.