PARTS-009 / Pocket Filter (Portable Water Filter) Cleaning fungicides Are you worried that Portable Water Filter may grow bacteria? If the filter doesn't use for a long time without proper treatment after filtering the outdoor water, the bacteria may grow quickly in the filter. Nano silver liquid can kill the bacteria and maintain your filter effectively. Please backwash your filter with clean water and then soak the filter in the nano silver liquid for one night. Please dry your filter after soaking.   Capacity: 5ml Concentration: 2000 ppm Description: Silver 0.2% Polyvinylpyrrilidone 0.3% Water 99.5% Application: Water filter backwash after sterilization clean.This fungicide can be reused. Travel antibacterial. Applicable filter material: hollow fiber membrane, ceramic Operating concentration: 30ppm Use for: Pocket filter, Sawyer, Lifestraw