Carbon molecular sieve (CMS) is made out of coal, coconut, etc and it specializes in adsorbing material under 10 angstroms, something activated carbon and zeolite cannot do accurately. Carbon molecular sieve specializes in separating oxygen from nitrogen, an important part in natural gas processing. This process is done with a PSA (Pressure Swing Adsorption) device in two phases. The first phase sees the gas enter the PSA generator and the oxygen is adsorbed while the nitrogen passes through because the nitrogen molecules are too large and are used as a separate product. The second phase sees the oxygen slowly released from the sieve at low pressures and thereby regenerating it so that the separation process can be repeated. CMS is the crucial element of any PSA-Plant for the generation of Nitrogen. The PSA process provides an in-house, indepedent Nitrogen supply at low cost for ineritizing storage tanks, piplines and tankers, for processing and storing perishable foods and beverages, for heat treatment of metals, for processing plastic and fibers, in microchip production and many other applications.