The ZPure CO2 Filter removes carbon dioxide from inert gases, He, Ar, N2, H2, and clean dry air (CDA) to low ppb levels. The filter functions by consuming carbon dioxide in a reaction with highly-dispersed NaOH on a silicate support. The reaction produces water which remains adsorbed in the purifier. In highly critical applications consideration should be given to using an additional moisture trap after the CO2 Filter as a safety measure. It is available in 4 sizes of stainless steel cylinders ranging from 130 cc to 750 cc. The ZPure CO2 Filter is available with standard compression fittings and quick connect fittings offered in ¼” and 1/8” brass and stainless steel.