W211 Drinking Water – Final Results – Survey Shipped: April 12, 2021
| Challenge | Individual Challenges and Water Methodology Charts (pdf) | |||
|---|---|---|---|---|
| W211-1: E. coli | MPN | MF | ES | PA - All |
| W211-2: Enterobacter species | MPN | MF | ES | |
| W211-3: No organisms | MPN | MF | ES | |
| W211-4: E. coli | MPN | MF | ES | |
| Method and Analysis Time (hs) Charts | MPN Time | MF Time | ES Time | PA Time |
MPN: most probable number; MF: membrane filtration; ES: enzyme substrate; PA: presence/absence
ISO17043