Molecular Sieve 4A 4x8B desiccant Zeolite beads 2 lbs

4A 4X8 Molecular Sieve Desiccant is an alkali alumino-silicate in the spherical form. It is the sodium form of the Type A crystal structure with an effective pore opening of approximately 4Å. It will adsorb molecules such as oxygen, nitrogen, carbon dioxide and straight chain hydrocarbons. Aromatics and branched chain hydrocarbons will not be adsorbed.