Profile: Liberty Industrial Gases and Welding Supply, Inc. is a supplier of compressed gases and welding supplies. We specialize in gases & associated products, cylinder management services, and technical expertise. We also offer safety equipments, power tools, hand tools, abrasives, oxy-fuel equipments and plasma power supplies. Nitrogen, or N2, is a diatomic gas which comprises 78 percent of the earth's atmosphere. In addition to air, nitrogen is found in the protein matter of all life forms, in some natural gas-hydrocarbon deposits, and in many organic & inorganic compounds. Under normal conditions, nitrogen is a colorless, odorless and tasteless inert gas which has no toxic properties and is slightly lighter than air. We provide a vast range of power tools, from 4.5 inch grinders to 14 inch metal cut-off saws. We also provide an entire spectrum of drills. Acetylene (C2H2) is a colorless and highly flammable gas. It is used in optical spectrometry as an instrumentation gas and in atomic absorption for elemental analysis as an instrumentation gas. It is also used as a fuel gas in atomic absorption spectrometry for elemental analysis.