Activated carbon filter AC 12 can be filled with loose activated carbon pellets. These filters are usually refillable and are further characterised by their combination or high adsorption capacity and low flow rate. The flow rate or these filters is particularly high, while their adsorption capacity is low. In the case of extremely high concentrations or gases, it is also advisable to use stainless steel.
It is important that separate filters are fitted in front or and behind the carbon filters.