Gas Chromatography is one of the most ubiquitous analytical chemistry tools
in industry today. Modern GC instruments employing combustion detectors such
as the FID, NPD and PFD require a supply of high purity hydrogen and zero air
to generate a flame. Hydrogen generators and zero air generators are now a long-established
method of supplying the required gases to combustion detectors.
In addition, GC chemists are now increasingly looking at hydrogen as a viable
replacement for helium as a capillary column carrier gas. This is partly due
to the rapidly escalating price of helium but also due to the well-known chromatographic
benefits such as faster analysis and increased resolution associated with the
use of hydrogen. However, the more stringent purity (and consistency of purity)
requirements associated with carrier gas and the requirement for increased safety
levels has meant that a more sophisticated design of generator is required for
such applications.
Parker domnick hunter offers a full range of hydrogen generators for both
fuel gas and carrier gas applications that make safety concerns associated with
the use of high pressure hydrogen cylinders a thing of the past. Hydrogen is
only generated on demand at low pressure and the volume stored within the unit
is minimal. Built-in leak detection is standard across the range and interfacing
capabilities can be employed to further improve safety levels.
Parker domnick hunter also offers high purity nitrogen generators that are
ideally suited to the supply of make-up gas to all combustion detectors or,
for more routine analyses, to the supply of nitrogen for use as a carrier gas.
