Gas generators

Gas generators are playing an increasingly important role in the gas supply for analytical instruments such as gas and high-pressure liquid chromatographs (HPLC-MS, LC-MS, GC, GC-MS).

High purity gases produced by generators meet the stringent requirements for gas supply.

Gas generators are therefore an alternative to high pressure gas cylinders in many applications.

Parker offers these analytical gas systems. Formerly known as Balston, Whatman and Parker Domnick Hunter. Parker has a worldwide presence as a leading supplier of gas generators. Furthermore, equipment manufacturers such as Shimadzu, Thermo, Agilent, distribute gas generators under their own name, which are often from Parker.

Other smaller, local companies such as Peak, Schmidlin, CMC, VICI-DBS are still present on the market.

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Gas generators for GC systems

High purity gases:

In chromatographic analysis, 3 different gases are predominantly required:

  • Hydrogen and zero air as fuel gases in gas chromatography,
  • Hydrogen and nitrogen as carrier gas
  • Nitrogen in larger quantities in LCMS applications

Mode of operation:

Hydrogen is generated electrolytically in the gas generators (PEM technology) and subsequently treated in different ways (dried with a multi-dryer) depending on the application. Purities of 5.5-6.5 are achieved. Zero air is high purity air with a residual hydrocarbon content of up to less than 0.1ppm. Gas generators remove the organic impurities from your compressed air by means of a catalyst, thereby ensuring a constant air flow. Nitrogen is produced in ultra-high purity, in small quantities in the lower liter range with a purity of >99.9995%

Membrane technology is used to meet the requirements of the latest LCMS systems in terms of drying, wrapping, nebulization and collision of gases, even for larger quantities of nitrogen.


  • Constant pressure and continuous quality of the gases ensure higher stability and reproducibility of the results or chromatograms.
  • The exchange of gas cylinders is no longer necessary and leads to less effort. This ensures a gas supply around the clock.
  • High pressure gas cylinders are no longer required in the laboratory. This reduces the health and safety risk. The hydrogen generators shut down automatically in the event of a leak, which significantly reduces the risk of accidents.
  • The purchase of a gas generator often pays for itself in less than 18 months.
  • Cost reduction is achieved by eliminating the cost of providing, renting, storing and delivering gas
  • Plug-and-play systems, even for critical applications
  • A variety of models can be supplied with integrated oil-free compressors
  • Units are compact and reliable with minimal operation and maintenance. Cost-effective maintenance kits, replacement diaphragms, filter kits are available for preventive maintenance or repairs after various hours of operation.

WICOM offers top service for repair and maintenance of gas generators, on site if required.

For more than 38 years WICOM has shown itself to be a strong and competent partner for the separation technology industry. Our focus is on gas chromatography (GC) and high performance liquid chromatography (HPLC). Both our prices and the fast and competent processing of your order are our unique selling points.
You are unsure about the technical requirements of your gas generator and need support? We are happy to assist you and look forward to hearing from you.

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