Afrox HiQ speciality gases include pure'scientific' gases;made-to-order scientific carrier gases and mixtures;calibration mixtures for certifying the accuracy of instruments;as well as a range of special-purpose mixtures for safety,research and development in the petrochemical,energy and mining industries,scientific laboratories and at health facilities.Afrox's high purity atmospheric gases include argon,carbon dioxide,helium,nitrogen and oxygen.Gas purity is described in terms of a number of nines:a five nines(N5)purity,for example is 99,999% pure,which means it has an impurity level of less than 0,001% or 10 parts per million(ppm).
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