W221 Final Results

W221 Drinking Water – Final Results – Survey Shipped: April 04, 2022

W221 Final results (PDF)


 

ChallengeIndividual Challenges and Water Methodology Charts (pdf)
W221-1: Enterobacter speciesMPNMFESPA - All
W221-2: E. coliMPNMFES
W221-3: Enterobacter speciesMPNMFES
W221-4: Enterobacter species MPNMFES
Method and Analysis Time (hs) ChartsMPN TimeMF TimeES TimePA Time

MPN: most probable number; MF: membrane filtration; ES: enzyme substrate; PA: presence/absence

 

 

Posted in critiques, Water Microbiology Results