Compressed Oxygen Gas To Is:309/2005 (Fourth Revision). Terms And Conditions: 1. The Empty Gas Cyli Nders Are To Be Collected From Sse/C&W/Gy And Refilled Oxygen Gas Cylinders Are To Be Delivered To Consignee End By Th E Firm Whenever Required By The Consignee. 2.Collection Of Empty And Delivery Of Refilled Oxygen Cylinders Should Be Do Ne Within 48 Hrs.From The Date Of Intimation. 3. [A]Loading/Unloading Of Empty/Refilled Oxygen Gas Cylinders Will Be Pro Vided At Consignee End Only. [B]Loading/Unloading Of Empty/Refilled Oxygen Gas Cylinders At The Refilling Point Should Be Done By The Firm. ]