supply of refilling of empty cylinders with ultra-high purity (uhp) quality argon gas having 99.999% purity, for operation of oes and hydrostatic test certification for cylinders.refilling of empty cylinders with ultra-high purity (uhp) quality argon gas having 99.999% purity, for operation of oes and hydrostatic test certification for cylinders.,refilling of empty cylinders with ultra-high purity (uhp) quality argon gas having 99.999% p urity, for operation of oes and hydrostatic test certification for cylinders. [ warranty period: 30 months a fter the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]