... USA) requirements for bacteria & Protozoa.· Highest bacteria removing rate gravity water filter in the market.· Total storage up to 25L(9L upper ... contamination down to 0.1 micron. · Chlorine, VOC's, industrial solvents, bad taste and odor.4 Stage Purification:Stage 1 ... to remove:A. Hardness, Soften water.B. Heavy metal ions such as Pb2+, Cd2+, Cr6+, etc.C. Fluoride.D. Arsenic Gravity water filter