Water Filter Systems

Berkey BioFilm Drops false Gal

Starting $28
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Bio Film Drops
Bio Film Drops
Bio Film Drops

Berkey BioFilm Drops

{$ product.price $} $34

Quickly becoming one of the most popular systems, the Royal Berkey holds more water and filters it 14% faster than the Big!

  • Min. 2 Filters: 2-6 People
  • Max 4 Filters: 7 people
  • Flow Rate (Gallon Per Hour)
    2 filters : 4GPH
    4 filters : 8GPH
  • Dimensions: 9.5”D x 24”H
  • Empty weight: 8lbs

The Berkey BioFilm Drops were formulated to store and maintain water for up to 5 years. BioFilm drops will help to preserve your Black Berkey Purification Elements longer as it extends timeframe between cleanings if placed in the upper chamber. The drops are simple to use and are made in the U.S.A. 


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  • Berkey Biofilm Drops maintain stored freshwater for up to 5 years.
  • Specially formulated for use in harvested rainwater containers, long term storage water containers and for use in emergency preparedness and disaster relief
  • Extends the time between element cleanings
  • Eliminates the need to rotate stored water every six months and keeps your water fresh-tasting and odor-free
  • Simple and easy to use
  • Claims are based on independent testing and peer-reviewed scientific research and have not been reviewed or evaluated or approved by the EPA