Nitrogen Gas To Is:1747-1972 Technical Grade In Sellers Own Returnable Cyl Inders Of 6-7 Cub. Mtr.Capacity, Pressure- 150 Kg./Sq. Cms.Composition: N2=99.999% 02=Pp M.Drg No.Alt.Nil As Per Drg.No. Nil Alt Nil Specn: Nitrogen Gas To Is:1747-1972 Technical Gr Ade In Sellers Own Returnable Cylinders Of 6-7Cubic Meters. The Gas Filled Cylinders Su Pplied Shall Be Suitable For Use With 150 Kgs/Sq.Cms Capacity Regulator [ Warranty Perio D: 30 Months After The Date Of Delivery ] ]