Water Research Centre:
Culligan filters are listed by the Water Research Centre and conform to the requirements of British Standards BS6920.
German Din Standards:
As applied by TÜV.

Standard No. 42: Aesthetic Effects Chemical Reduction Unit.
Category 1: Taste & Odour Reduction and Chlorine Reduction Particulate Reduction Unit Class 1:99.9% Reduction of Particles 1/2 micron and larger
in size.
Standard no. 53: Health Effects
Mechanical Filtration unit Turbidity Reduction, Cyst (Cryptosporidium) Reduction, Asbestos Reduction.