Carbonation stones, typically found on beer fermentation tanks, are designed for direct mounting via a Tri Clamp fitting. Each carbonation stone, made from sintered stainless steel SS316, is a submersible porous body that diffuses CO₂ gas directly into brewing liquid. In an ideal system, the stone is mounted on the lowest part of the tank providing for the longest distance for CO₂ to travel to the head. Some brewers use a carbonating stone inside a conical fermenter, rather than a tank. We also have a very popular carbonation guide.