Hydrogen Purity Levels

These are typical purity levels and certified gases are available along with many other grades, mixes and pressures to fit your requirements.

Welding / Industrial Grade

minimum purity 99.95%, Max Moisture 32ppm

Zero Grade 4.5

min purity 99.998%, H20 < 5 ppm, THC < 0.5 ppm

Ultra High Purity 5.0

min purity 99.999%, O2 < 1 ppm, H20 < 3 ppm, THC < 0.5 ppm

Research 6.0

min purity 99.9999%, O2 < 0.1 ppm; H20 < 0.5 ppm, CO2 < 0.1 ppm, CO < 0.1 ppm, THC < 0.1 ppm, N2 < 0.5 ppm, Ar < 0.1 ppm