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Table 5

Comparison of methods for detection of E. coli presence in well water samples (n = 635)

No. of results by MI agarNo. of results by Colilert®No. of results by Chromocult coliform® agar
Method and results+++
Colilert®       
74 20     
− 28 513     
Chromocult coliform® agar       
81 29 68 42   
− 21 504 23 502   
DC agar with BCIG       
75 13 63 24 71 17 
− 27 520 32 516 39 508 
No. of results by MI agarNo. of results by Colilert®No. of results by Chromocult coliform® agar
Method and results+++
Colilert®       
74 20     
− 28 513     
Chromocult coliform® agar       
81 29 68 42   
− 21 504 23 502   
DC agar with BCIG       
75 13 63 24 71 17 
− 27 520 32 516 39 508 
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