empanelment of vendors for commercial high purity gases for research purposes , rate for commercial & high purity gases for research purposes , high pure argon gas grade 1 purity – 99.9995% , high purehydrogeno grade purity – 99.9995% , high pure oxygen grade 1 purity – 99.95% , ultra high pure nitrogen grade 1purity – 99.9999% , high purehelium 4.5 grade purity – 99.995% , ultra high pure he 99.999 , compressed oxygen , dry nitrogen , dissolved acetylene , hydrogen , zero air , carbon dioxide (in kgs.) , high pure argon gas 5.0 grade purity 99.999% , high pure nitrogen gas 5.0 grade purity 99.999% , high pure hydrogen gas 5.0 grade purity 99.999% , holding charges after the free period (per cylinder)