| Absolute filtration rating >99.9999% | 0.9 microns absolute |
| Effective filtration rating >99.9% | 0.5 - 0.8 microns |
| >99.7% | 0.3 - 0.5 microns |
| >98% | 0.2 - 0.3 microns |
| E.coli bacteria | >99.99% |
| Fecal bacteria | >99.99% |
| Salmonella typhi | >99.999% |
| Vibrio cholerae | >99.99% |
| Klebsiella Terrigena | >99.999% |
| Shigella disinteriae | >99.999% |
| Serratia marcescenes | >99.99% |
| Cryptosporidium cysts | 100% |
| Giardia cysts | 100% |
This
data, from tests conducted by independent laboratories, demonstrates the
removal capabilities of Doulton's purification element. This does not imply
that these contaminants are present in individual water supplies. Detailed
test results available on request.
It should be clearly understood that the concentration of bacteria fed to
the filtration element is artificially high in order to simulate a challenging
test for the ceramic element. The most aggressive "real life"
condition would normally be at least 1000 times less severe.
Drinking water systems from Doultonusa.com