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This Pure Gas Finder lists the most popular high-purity gases from our HiQ® portfolio. This contains over 100 different pure gases including HiQ Nitrogen 5.0 and HiQ Argon 6.0.
You can search by gas name or by application. You can also enter a chemical formula or a CAS-Number (e.g. CAS: 7783-54-2) in the name search field.
Gas purity is commonly expressed as a two digit number. Helium with a purity of 99.9996%, for example, is represented as HiQ Helium 5.6, with 5 representing the number of nines and 6 representing the first digit following the nines. In many cases, it is the degree and type of impurity that makes the real difference rather than the actual gas purity. Two gases of nominally identical purity may not necessarily have the same effect. If you have an instrument that requires a 5.0 grade gas with a total hydrocarbon level < 0.5 ppm, for example, and you use a grade 5.0 product with hydrocarbon level <1 ppm, the increased noise might affect your analysis. The purities listed here are from our international HiQ product range. Specifications may differ from region to region.
If you can’t find the high purity gases you are looking for, contact our HiQ Expert Team. If you are looking for gas mixtures, visit our speciality gas mixtures page.