Specifications include, but are not limited to: Purchasing various gases, supplies, gas cylinder rental and dewar rental. Contract Item #1 – Argon (colorless, odorless, non-flammable gas) Argon must be Ultra High Purity (minimum 99.999%) Cylinder size must be 300 cubic feet minimum to 350 cubic feet maximum. Contract Item #2 – Nitrogen (odorless, colorless gas symbolized by the letter N on the periodic table) Nitrogen must be Ultra High Purity (minimum 99.999%) Cylinder size must be 300 cubic feet minimum to 350 cubic feet maximum Contract Item #3 – Helium (colorless, odorless, non-flammable, inert gas) Helium must be Ultra High Purity (minimum 99.999%) Cylinder size must be 275 cubic feet minimum to 350 cubic feet maximum