ZEOCHEM Molecular Sieve 13X Types: Z10-01 : Standard 13X Molecular Sieve Z10-02 : Air Pre-purification Z10-03 : Purification of Hydrocarbon,Olefin and Sweetening Z10-04 : PSA ( Pressure Swing Adsorption Oxygen Units ) Z10-05-03 LiX : VPSA Oxygen Units ( LiX) Z12-07 LiLSX : Medical Oxygen Concentrators (LiX) ZEOX OII Plus: Medical Oxygen Concentrators (NaX)