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Pure Gases
All pure gases are classified by grade, so you can be certain of purity levels. The first digit of the classification indicates the number of nines purity ( for example, n3.0 = 99.9% purity)
The second digit is the number following the last nine for example, N4.6 helium has a guaranteed minimum purity of 99.996% and a corresponding maximum impurity level of 0.004% or 40ppm
Click on the Purity and Grades PDF in related links for more information on the gases listed below.
AMMONIA BUTADIENE BUTENE CARBON MONOXIDE DEUTERIUM DIMETHYLETHER ETHENE ETHYLENE HELIUM HYDROGEN HYDROGEN SULPHIDE ISOBUTANE KRYPTON MONOMETHYLAMINE NEON NITROGEN NITROUS OXIDE PERFLUOROPROPANE PHOSGENE PROPANE SULPHUR DIOXIDE TRIMETHYLAMINE | ARGON BUTANE CARBON DIOXIDE CHLORINE DIMETHYLAMINE ETHANE ETHYL CHLORIDE ETHYLENE OXIDE HEXAFLUOROETHANE HYDROGEN CHLORIDE ISOBUTYLENE METHANE METHYL CHLORIDE NATURAL GAS NITRIC OXIDE NITROGEN DIOXIDE OXYGEN PROPYLENE SULPHUR HEXAFLUORIDE XENON
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