... most molecules with a kinetic diameter of less than 4 angstroms and exclude those larger. Such adsorbable ... gas, LPG, air, inert and athmospheric gases, etc 2) Removal of hydrocarbons, ammonia and methanol from gas streams ( ... are used in the air break units of buses, trucks and locomotives 4) Packed in small bags, it ... of 1-2 mm, (10x18 mesh) 2-3 mm, (8x12 mesh) , 2.5-5 mm, (4x8 mesh) and as powder, and ...