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

 

 

Particulate Reduction

 

 

 

 

>0.9 micron

>99.99%

 

 

 

>0.5 micron

>99.9%

 

 

Turbidity

>99.7%

Cysts

 

 

Cryptosporidium

>99.99%

 

 

Giardia Lambia

>99.99%

Pathogenic Bacteria

 

 

E. Coli

>99.99%

 

 

Vibrio Cholerae

>99.99%

 

 

Klebsiella Terrigena

>99.99%

 

 

Salmonella Typhi

>99.999%

 

 

Shigella

>99.999%