Annual Rate Contract For Refilling Of Gas Cylinders And Supply Of New Cylinder With Gases , Refilling Of Gas Cylinder For The Laboratry(Category-A) , Argon , Nitrogen , Oxygen , Helium , Hydrogen , Acetylone , Argon , Nitrogen , Oxygen , Helium , Hydrogen , Acetylone , Argon , Nitrogen , Oxygen , Helium , Hydrogen , Acetylone , Argon , Nitrogen , Oxygen , Helium , Hydrogen , Acetylone , Argon 80% And Co2-20% , Argon 90% And Co2 10% , Argon 70% And Co2 30% , Argon 70% And Co2 30% , Xenon Gas , New Cylinder With Gasfor The Laboratory (Category-B) , Argon , Nitrogen , Oxygen , Helium , Hydrogen , Acetylone , Argon , Nitrogen , Oxygen , Helium , Hydrogen , Acetylone , Argon , Nitrogen , Oxygen , Helium , Hydrogen , Acetylone , Argon , Nitrogen , Oxygen , Helium , Hydrogen , Acetylone , Diffusion Resistant Single Stage Regulator For Argon, Nitrongen, Oxygen, Helium Hydrogen Acetylone Gas Cylinder , Diffusion Resistant Double Stage Regulator For Argon, Nitrongen, Oxygen, Helium Hydrogen Acetylone Gas Cylinder , Liquid Nitrogen (The Supplier Is Required To Refilled In Iop Nitrogen Container At Iop Site ) , Gass Trolley Four Wheels For Moving Gas Cylinder