Do PF-2 filters contain aluminum?

Aluminum : It is a soft and ductile metallic element. It is a pure metal, with a shiny, silvery appearance.

Activated Alumina : contained in PF-2 filters, is widely used in many industrial applications due to its adsorption properties.

Its Structure is highly porous, which allows it to capture and retain a variety of molecules. Due to its large specific surface area and adsorption capacity, activated alumina (aluminum oxide, Al₂O₃) is commonly used as an adsorbent in gas and liquid purification, gas drying, chromatography, and other similar applications. It can remove impurities, water molecules, and other unwanted components from various substances. Mainly used as a raw material to extract aluminum metal. It is also used in the manufacture of refractories, abrasives, ceramics, and in certain types of filters for water purification.

If you place the activated alumina in water, it will remain in solid form and settle to the bottom of the container. It is therefore not soluble in water. 

Inside the PF-2 filter a membrane retains Activated Alumina , so it can do its job of absorbing unwanted elements in complete peace of mind. 

It is therefore very important to follow the instructions for use when priming and installing PF- filters with black berkey filters. You should not screw your filter with the Black Berkey thread more than 8 turns. You risk piercing the membrane designed to retain Activated Alumina .