 TECHNICAL
MEMORANDUM
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.
| % 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 |
Conclusion:
General Ecology Inc.'s Seagull IV, Nature Pure and First Need water
purifiers met the EPA Guide Standard as Microbiological Purifiers
by removing bacteria, cysts and virus without the use of chemical
additives or multiple processing.
|
