crm - certified reference materials

Certified reference materials (CRM) can be difficult to obtain, and primary reference materials (PRM) are costly. Odournet can certify traceability of reference materials to primary standards under accreditation by comparative analysis with a photoacoustic analyser according to the standard ISO 6143 for the following mixtures in gas cylinders:

n-butanol in nitrogen, concentration range from 55 to 65 ppm with a Calibration and Measurement Capability (p< 0.05) of 2.1%

SF6 in nitrogen, concentration range from 360 to 440 ppm with a Calibration and Measurement Capability (p< 0.05) of 1.4%

These calibrations are performed under ISO 17025 accreditation for calibration.