As working gas, you can use nitrogen, argon or helium. The pressure should be at 6bar, an appropriate pressure reducer with an appropriate setting range for reducing the gas cylinder pressure is required.
A concentration of 2%-5% H2 in 95-98% Ar/N2 (depending on the type of working gas) can be used as regeneration gas (mixed gas). The pressure of the regenerating gas should be at 0.3 to 0.4 bar, a corresponding pressure reducer with a corresponding setting range for reducing the gas cylinder pressure is required.