Colourless High Purity Nitrogen can be used in large quantities as a purge gas or carrier gas as well as for blanketing equipment such as furnaces when not in production. The Nitrogen is colourless and odourless gas and asphyxiant in high concentrations. The Nitrogen is used as a carrier gas in gas chromotography and also used as a zero gas in analytical instruments. The Colourless High Purity Nitrogen can act as a common balance gas in many gaseous mixtures.