NMI's Reference Gas Mixtures Facility is certified by NATA for:

• the production of reference gas mixtures (click here for details of our NATA accreditation)
• analysis of gases and aerosols by gas chromatography (click here for details of our NATA accreditation)

NMI manufactures and holds the Australian primary gas standards. Gravimetric and analytical systems are used to prepare gas mixtures whose chemical composition is traceable within known uncertainties to Australia's national measurement standards. A prime objective of our facility is to ensure that commercial producers of calibration gas mixtures are able to obtain traceability to national standards of measurement and thus to the International System of Units. 

Click here for details of our chemical reference materials. 

International Comparisons

NMI has participated in numerous international comparisons organised through the Asia Pacific Metrology Programme and BIPM's Consultative Committee for Amount of Substance — Metrology in Chemistry which have demonstrated that gas mixtures made by NMI are internationally comparable with those of other national metrology institutes such as NIST (USA), NPL (UK) and VSL (Netherlands).

Proficiency Testing

We also offers services in specialised gas testing and gas proficiency testing. The gas proficiency testing studies have focussed on two main areas of importance to Australia — natural gas composition and mine/confined spaces safety. Laboratories are invited to participate in our interlaboratory gas proficiency testing program. Click here for details of our chemical proficiency testing activities. Current studies are:

• RGM 11–1 natural gas (click here to register and for details of the study)
• RGM 11–2 liquefied natural gas (click here to register and for details of the study)

Click here for copies of previous proficiency study reports.

Contact damian.smeulders@measurement.gov.au for more details.