Ideal Spectroscopy Gas Cylinder Mixing Assemblies are designed to simplify the mixture of process gasses across a variety of applications. These systems are complete with a gas regulator and gas regulator purge valve assembly, uses high pressure needle valves (up to 6000 PSI) to help precisely control gas flow into the mixture cylinder. All pressure regulators, cylinders, valves, fittings, and gas delivery supply parts are also sold separately.