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All Doulton® and British Berkefeld ceramic filter elements are manufactured with the highly consistent and controlled pore structure necessary to provide genuine sub micron filtration.
The table provides a summary of independently verified test data for Doulton and British Berkefeld filter elements and systems.
Mechanical Filtration Rating
>0.9 micron >99.99%
>0.5 micron >99.9%
Giardia Lambia >99.99%
E. Coli >99.99%
Vibrio Cholerae >99.99%
Klebsiella Terrigena >99.99%
Salmonella Typhi >99.999%
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