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Gas
Chromatography
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H2
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for GC FID Fuel Gas 30cc/min
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Ideal for Capillary GC 2 to 5 cc/min/Split Flow50ml/min
HIGH Speed GC
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H2 150psi 99..9999%
PG-H2 100psi 99.999%
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N2
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packed Column GC 30cc/min 1/8” Column
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Slightly more efficient at optimum flow rated 15cm/sec
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Option with B/in Air Compressor 200cc/mon
99.9999%
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ZERO-Air
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for High Sensitivity FID ~250cc/min
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Catalyst system for <0.5ppM CH4;requires AIr Supply
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Helium
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Ideal Carrier Gas
Essential for GC Helium Ionisation Detector
Preferred for GC/MS
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but supposedly the Earth is running out of Natural Helium
Price is going up and up
- except for that produced from Nuclear Energy - still a “taboo” subject ( in Australia )
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Pays for itself in
1 to 3 years
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Safety issues
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eliminates gas bottles
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minimises in-house gas plumbing
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ideal form multi-floor labs
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GC Carrier Gas requires HIGH PURITY - Gas Filters and OxyTraps
- particularly at High Column temperatures and capillary column use
Also for Detector Make-up Detector Gas and High Senitivity GC DEtectors eg TCD, ECD, HID, MS
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ex Texol de-listed
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see Gas Generators
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