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Often the gas standards in cylinder mixtures are very reactive and instable, especially at low concentrations. Permeation tubes are ideal devices in generation of calibration gas standard for:
- air quality analyzers
- gas analyzers
- FTIR
- gas chromatograph
- GC-MS
- Ion Mobility Spectrometer
- sniffers
With permeation devices is possible modify the mixtures components simply removing and/or additioning a single tube in permeation chamber. For GC-MS calibration are also available deuterate substances.
Permeation devices are utilized in:
Petrochemical plants and Refinery
Semiconductor industry (trace moisture standard)
Gas sensor development
Test with controlled atmosphere
Catalyst test with synthetic gas
Test on Odours Monitor
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| The gas concentration can be calculated using following equations: C(ng/sccm) = C(ppm) x K1 C(ppm) = C(ng/sccm) x K2 where K1 = Molecular Weigh / 24.46 K2 = 24.46 / Molecular Weight 24.46 is the molar volume in liters @ 25°C, 760 mmHg |