Helium BIP® Technology 6.0 (99.9999%). (O2 <0.01 ppm, H2O <0.02 ppm, THC <0.1 ppm, CO + CO2 <0.1 ppm, N2 <1 ppm, CFC < 0.001 ppm). Helium supplied using our unique BIP® technology contains ultra low levels of Oxygen, Hydrocarbons and Moisture making it an ideal carrier and makeup gas for many laboratory applications as it minimises column bleed and baseline noise for more accurate analysis. Supplied in a 50 litre steel cylinder at 200 bar.