W191 Drinking Water – Final Results – Survey Shipped: April 8, 2019
W191 Final results (PDF)
| Challenge | Individual Challenges and Water Methodology Charts (pdf) | |||
|---|---|---|---|---|
| W191-1: E. coli | MPN | MF | ES | PA - All |
| W191-2: Enterobacter species | MPN | MF | ES | |
| W191-3: Enterobacter species | MPN | MF | ES | |
| W191-4: Enterobacter species | MPN | MF | ES | |
| Method and Analysis Time (hs) Charts | MPN Time | MF Time | ES Time | |
MPN: most probable number; MF: membrane filtration; ES: enzyme substrate; PA: presence/absence
ISO17043