Everything comes in cycles, and means for water treatment are no exception. We have had chemicals and pumped filters and UV, each of which had problems. Sawyer introduced a filter system which, while it needed pressure, did not need pumping. Most of their systems handled bacteria and protozoa, but not viruses. RapidPure have introduced a new filter system which they claim requires only one tenth of the pressure while handling viruses, bacteria, protozoa and anything larger, to an efficiency often seriously exceeding the EPA requirements. 

ARTICLE OUTLINE

  • Introduction and Background
  • RapidPure
    • Flow Rate and Pressure
    • Filter Elements
      • Filter A
      • Filters B & C
      • Filters G & F
      • Filter D
      • Filter E
      • Filters H & I
      • Filter J
      • White and Grey filters
    • Filter 'Systems': Bottle and Bag
    • Performance Testing
      • The Test Water
      • Measurements
      • Sawyer
      • RapidPure
    • Summary

    # WORDS: 4530
    # PHOTOS: 13

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