*The Berkey Biofilm Drops™are made in the USA-
Treats 330 US Gallons (or 1250 litres)
- Berkey Biofilm Drops™ are used for storing and maintaining pure, fresh water
- Scientifically engineered and patented Copper-Silver Ion solution in the defense of biofilm related bacteria in ceramic water filters, carbon (charcoal filters) and water storage containers
- Especially formulated for use in harvested rainwater containers, long term storage water containers and for use in emergency preparedness and disaster relief
- May be used with any type of filter media but works best with Black Berkey® Purification Elements
- Extends the shelf life of water being stored for up to 5 years
- 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