Doulton Taste 1μm Water Replacement Filter

All bottles are equipped with the advanced Doulton Taste® replacement filter.

Except for its pore size 1 micron, the filter material follows a positively charged electrosorption process (attraction and retention) to attract and trap harmful agents much smaller than the pore size.

Laboratory tests proved the removal of 99,994% of e-coli, 99,9999% of cryptosporidium and giardia lamblia, the bacteria widely found in lakes, streams and other open water sources.

They are made from a custom blend of plastics that have passed rigorous testing SGS, for food contact safety, from FDA.