tender for empanelment of vendors for commercial & high purity gases for research purposes , empanelment of vendors for commercial & high purity gases for research purposes as per technical specification in annexure-a , high pure argon gas grade 1 purity - 99.9995% , high pure hydrogen o grade purity - 99.9995% , high pure oxygen - 2.80 grade purity - 99.999% , ultra high pure nitrogen grade 1 purity - 99.9999% , high pure helium 4.5 grade purity - 99.995% , ultra high pure he 99.999 , compressed oxygen , dry nitrogen , dissolved acetylene , hydrogen , zero air , carbon dioxide (in kg) , 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)