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General Ecology® Water Purifiers Certified to EPA Guide Standards
Seagull® IV & Nature Pure® UltrafineT Water Purifiers
First Need® Portable Water Purifiers
Three series of tests were conducted by the independent
laboratory at the University of Arizona to document removal of microbiological
contaminants according to current EPA Guide Standard and Protocol
for Testing Microbiological Water Purifiers.
The purifiers were operated for 100% of their rated capacity and challenged periodically with high concentrations of bacteria, cysts and virus. At the 60% and 75% test points the units were challenged with "worst case" water according to protocol. Additionally, the systems were allowed to stagnate for 48 hours after the 50%, 75% and 100% test points to demonstrate that no microbiological growth through the cartridge occurred.
The purifiers were operated for 100% of their rated capacity and challenged periodically with high concentrations of bacteria, cysts and virus. At the 60% and 75% test points the units were challenged with "worst case" water according to protocol. Additionally, the systems were allowed to stagnate for 48 hours after the 50%, 75% and 100% test points to demonstrate that no microbiological growth through the cartridge occurred.
| % Reduction (geometric average of 3 units) | |||
| Bacteria | Cysts | Virus
Polopviurs type I |
|
| Test
Point % of Rated Capacity |
Klebsiella terrigena | Cryptosporidium | Rotavirus SA-11 |
| start | >99.9999 | >99.9 | >99.99 |
| 25% | >99.9999 | >99.9 | >99.99 |
| 50% | >99.9999 | >99.9 | >99.99 |
| 48 hr. stagnation | NG | NG | NG |
| *60% | >99.9999 | >99.9 | >99.99 |
| *75% | >99.9999 | >99.9 | >99.99 |
| 48 hr. stagnation | NG | NG | NG |
| *90% | >99.9999 | >99.9 | >99.99 |
| *100% | >99.9999 | >99.9 | >99.99 |
| *= Worst case challenge water. NG = No Growth | |||
