Analytical Hydrogen
Hydrogen's primary use in laboratories is for the provision of carrier gas or fuel gas in analytical techniques such as gas chromatography; applications which demand high purity hydrogen.
As a fuel gas for gas chromatography, high purity hydrogen is combusted in flame ionisation detectors (FIDs) in order to determine the specific compounds within a gas stream. A laboratory hydrogen generator provides hydrogen on demand for a gas chromatograph or chromatographs, thus eliminating the need to store high pressure hydrogen within the lab environment. In this instance, purity is less important than when used as a carrier gas, typically 99.9995%.
As a carrier gas, hydrogen has many benefits over helium or nitrogen. From a performance perspective, Hydrogen has a low viscosity, high diffusivity, and high flow rate for a given pressure differential. This can reduce chromatograph analysis times, without detriment to accuracy. For carrier gas, hydrogen purity is critical and is typically 99.9999%.
From a cost perspective, on-demand generation of laboratory hydrogen offers a fast return on investment when compared to the supply and rental of helium cylinders, and eliminates the health and safety issues associated with their handling and storage.
ITM can offer laboratory hydrogen generators at pressures of up to 13.8bar, purities in excess of 99.9999% and at flow rates of up to 1000cc/minute.
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