The shelf life of the Sport Berkey Water Bottle is 50 years. When you will not be using the system for an extended period of time, it is important to remove the filter. With the filter removed, flush the bottle with one of the following:
• 1/4tsp non-scented/non-enhanced* chlorine bleach per one half gallon of water
• 50/50 mixture of 3% Hydrogen Peroxide and water.
Once the bottle has been flushed, rinse with water. Allow all parts to dry thoroughly. Re-assemble and seal in an air tight container if possible. Do not allow the filter to freeze, do not place in microwave oven, and do not run hot water through the filter.
*If you are not aware, many bleaches today come with “other things” in them to provide a nice smell, etc. We don’t recommend these types of bleaches.