High grade molecular sieves are supplied by Research Lab Fine Chem Industries. Molecular sieves are nothing but materials with holes (pores) of uniform sizes. The diameter of a molecular sieve is measured in nanometres (nm) or ngstrms (). Microporous materials have pore diameter of less than 20 (2nm) and microporous materials have a pore diameter greater than 500 (50nm). Molecular sieve is an alkali metal alumino-silicate, the potassium form of the type A crystal structure. These are available in the form of sodium alumino silicate. Keep the molecular sieve in an air tight container, away from moisture. CAS No. 63231-69-6 Quantity provided: 250 gm/bottle Specifications: 13A x 1.5 mmMolecular sieves have a range of uses like static drying of insulating glass units, dehydration of highly polar compounds and dehydration of unsaturated hydrocarbons. They are also used to dry gas streams in the petroleum industry. In the laboratory, molecular sieves are used to dry solvent. Molecular sieves seem to be superior to traditional drying techniques like aggressive desiccants. They also find application in the filtration of air supplies for breathing apparatus, like the ones used by scuba divers and firefighters. The air is supplied by an air compressor and is passed through a cartridge filter which, may be filled with molecular sieve and/or activated carbon, and then used to charge breathing air tanks. Such kind of filtration can remove particulates and compressor exhaust products from the breathing air supply.