OREAS 724b

OREAS 724b is a certified reference material (CRM) prepared from a high-grade graphite concentrate and granodiorite sourced from Oaklands Quarry, Tullamarine, located in northern Melbourne, Victoria, Australia.

The granodiorite is a coarse-grained intrusive igneous rock composed predominantly of quartz, plagioclase feldspar, and biotite, characteristic of Silurian-aged granitoid formations within the Melbourne Zone of Victoria.

OREAS 724b has been characterized using the following methods:

  • Total Graphitic Carbon (TGC) by dilute acid (HCl) digestion followed by roasting at approx. 425 °C, then analysis by infrared combustion furnace
  • Total Carbon (C) by infrared combustion furnace

Certified values for applicable analytes are operationally defined for each method, with results under OREAS ISO 17034 scope of accreditation.

Note: Analyte values are indicative only and may change when certified.
Analyte Indicative Value 1SD Expanded Uncertainty Low Expanded Uncertainty High Method
C-(Graphite), Carbon, graphitic (wt.%) 12.00 TBD TBD TBD Infrared Combustion
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Certificate DataPack SDS NRAM (249 KB)
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