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Gas reference materials

Direct chemical ionisation mass spectrometry calibration (SIFT-MS)

Calibration standards for selected ion flow tube mass spectrometry

Calibrating selected ion flow tube mass spectrometry instruments

NPL provides an 8-component gas mixture standard for calibrating Selected Ion Flow Tube Mass Spectrometry (SIFT-MS) instruments. The composition of this standard includes the following compounds at nominally 2 μmol/mol within a nitrogen balance gas. The uncertainties for each compound are in the range of 3-5 %.

1,2,3,4-tetrafluorobenzene benzene isobutane
octafluorotoluene p-xylene hexafluorobenzene
ethane toluene  

Note: Commonly used names are shown here but the preferred IUPAC names where appropriate are: 2-methyl propane (isobutane), 1,2,3,4,5-Pentafluoro-6-(trifluoromethyl)benzene (octafluorotoluene) and 1,4-Xylene (p-xylene).

Bespoke calibration mixtures

NPL created the 8-component mixture in collaboration with the SIFT-MS community to address the most common calibration requirements. However, NPL can provide bespoke mixtures containing different compounds and different amount fractions if required.

Don’t see what you are looking for? Our diverse skill set enables us to provide bespoke solutions. Please contact us to discuss your requirements.

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Find out more about Mass spectrometry calibration (PTR-MS)

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