GC filters

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Gas filtering system Super Clean™

Is a cartridge system from SGT Scientific Glass Technology that makes changing GC gas filters quick and easy. The base plate of the filter cartridge is equipped with a non-return valve that ensures that no oxygen enters the cartridge when a filter is changed. Your system will therefore not be contaminated.

Why is gas purity important?

Depending on the configuration of the gas chromatograph, you will need one or more gases. Pollutants in the gases can cause ghost peaks in the chromatogram, making your analytical data less valid. The carrier gas must contain less than 1 ppm of oxygen, moisture or other trace contaminants to prevent degradation of GC columns, to extend the life of GC columns and to reduce bleeding of the stationary phase. But detector gases also need to be clean to measure components at low concentrations. For example, hydrogen, air and make-up gas from an FID detector must be free of contaminants to avoid fluctuations and excessive baseline noise.

Gas scrubber filters placed close to the gas chromatograph prevent many problems, extend the life of columns, reduce maintenance on the GC and provide more reliable data. Especially when using 5.0 or 6.0 quality gases.

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Component gas filtering system

Baseplate

Is the base plate on which the filter is placed with inlet and outlet connections for the gas pipe and two non-return valves that automatically allow the gas flow at the moment the filter is installed.

Universal ring nut

This is used to attach the filter cartridge to the base plate. It also serves to confirm the Electronic Maintenance Indicator.

Filter Cartridge

The filter cartridge is made of glass to prevent the diffusion of oxygen and is equipped with a plastic housing for safety. The PTFE seals on the bottom of the filler are only punctured when installed on the base plate.

Electronic indicator

Warns when filter needs to be replaced or serviced. A saturated filter is a major risk factor for the reliability of the analyses. It can release accumulated contaminants that cause large deviations from the results and therefore unnecessarily shorten the life of the GC column. The use of the indicator is optional.

SGT kolomsnijder eindresultaat

Capillary column cutters

The SGT Shortix™ capillary column cutter makes a cut around the column wall with a diamond cutter. As a result, the column breaks perfectly straight (see bottom example of picture opposite). This is in contrast to traditional column cutters such as a diamond pen or a sapphire that causes irregularities in the column at the place where it has been broken down (top example).

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