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 to 750 ml. The ZPure CO₂ filter is available with standard compression fittings and quick connect fittings offered in ¹/₄" and ¹/₈" brass and stainless steel.