5A molecular sieve for Oxygen Generator is the calcium form of the Type A crystal structure , its an alkali alumino silicate. Type 5A has an effective pore opening of 5 angstroms (0.5 nm). It contains tiny pores of a precise and uniform size, and it is mainly used as an adsorbent for gases and liquids. This sieve operates on molecular level and traps absorbed substances. It can adsorb water as much as 22% of its own weight. 5A molecular sieve adsorption principle is quite similar to that of size exclusion chromatography, except that without a changing solution composition.
