Berkey Biofilm™ Drops – Preserve Water Purity and Filter Performance

Advanced technological solution for protecting your filtration system

Berkey Biofilm™ Drops are a patented ionic copper and silver formula scientifically designed to protect water filtration systems from microbial growth and biofilm buildup.
Easy to use, they provide long-lasting preventive protection for both your filters and stored water.

Why use Biofilm Drops with your Berkey® system?

Antimicrobial pre-treatment for your filters

• Protects Black Berkey® filter elements from biological contamination

• Extends cleaning intervals, reducing manual maintenance

Easy dosing and long-lasting protection

• Only 4 drops are required to treat 3.8 liters of water with each refill

• Helps maintain filter performance even under intensive use

Ideal for long-term water storage

Store water for up to 5 years

• Eliminates the need to rotate stored water every 6 months

• Prevents unpleasant odors and keeps water fresh and stable

• Practical dosage: 10 ml for 210 liters of stored water

Before consumption, test the water using the included residual ion detection kit.
Stored water must always be filtered through a Berkey® system before drinking.

Composition of Berkey Biofilm™ Drops

• 96.5% copper sulfate pentahydrate

• 2.5% silver nitrate

• Complexing agents and stabilizers: < 1%

A precise, patented formulation for effective control of pathogens and biofilm formation in water containers.

Ionic technology for sustainable filtration

Berkey Biofilm™ Drops are an advanced solution for those who demand uncompromising water quality, whether for daily use or emergency water storage.