Whether it's the Black Berkey™ filters or the Berkey® PF-2™ filters, it is necessary to prime them before their first use or after a long period of storage.

You can refer to the Black Berkey® filter priming document and also the PF-2™ filter priming document (documents in English, provided in French at the time of purchase or upon request).

To facilitate the priming of the Black Berkey® filters, and if the space under your faucet is limited, there is also a priming pump, which is very practical and allows you to prime the Black Berkey® filters anytime, anywhere.