If the filters have already been used:

The Berkey® PF-2™ elements can be stored in a refrigerator for a short period of up to 10 days (but not in a freezer). Remove the filters from the system, place them in a sealed plastic bag, and place them in the least cold part of the refrigerator to prevent them from freezing. They can be stored this way for up to a week.

If you store them in the refrigerator, we recommend priming them for at least one minute, running water through both ends, before using them again.

Berkey PF-2™ elements should not be left exposed to air to avoid the potential development of bacteria on the media.

If you have never used your filters:

If the elements are still in their original packaging and have not been opened, make sure to store them in a place that does not emit strong odors, such as a laundry room or garage. The elements contain carbon, among other materials, which could absorb odors from the storage area, such as soap or detergent.