it is mainly used to make static dehydration in airtight gas or liquid system. It can remove the moleculars of ethyl alcohol, he 4A Molecular Sieve:it is mainly used to make static dehydration in airtight gas or liquid system. It can remove the moleculars of ethyl alcohol, hedrogen suplhide, carobn dioxide , ethylene, acrylica and also dry the alkane,It is used as a static desiccant in household ...