supply of supply of argon gas (consisting of 98% argon + 2% oxygen gas at n.t.p.) in firms returnable cylinders of 7cum capacity. note: - 1. firm should make delivery of gas cylinders at consignees premise as and when required. 2. number of cylinders required per day may vary as per railway requirement, hence firm must be ready tosupply those enhanced number of cylinders as per given time & quantity scheduled. , supply of argon gas (consisting of 98% argon + 2% oxygen gas at n.t.p.) in firms returnabl e cylinders of 7cum capacity. note: - 1. firm should make delivery of gas cylinders at consignees premise as and when required. 2. number of cylinders required per day may vary as per railway requirement, hence firm must be ready to supply those enhanced number of cylinders as per given time & quantity scheduled. [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]