Certified Reference Material (CRM)

Westref’s assay standards help our laboratory clients monitor the quality of their fire assay results with the highest level of confidence and amazing value.


  • Prepared to ISO Guide 35 standard
  • Analysed by approx 20 leading laboratories worldwide
  • Independently certified by Australia’s leading statisticians.
  • Certificate provided with every lot
  • Custom made upon request


“Reliable, driven, family business that provides quality products and will work diligently with its partners towards mutual success.”

Anonymous customer survey submission, 2016

“I hope you can keep producing such wonderful products and expand the range of your products”

Head of Fire Assay Tehran, Iran

“We have been using Western Refractories Fire Assay Flux, Crucibles and Cupels for the past six years at our Laboratory in Metro Perth and have had virtually no issues with the quality of the products or timely supply.”

Laboratory Manager Perth, Western Australia

“WR’s level of support, commitment to partnering, response time and desire to constantly improve are exceptional.”

Procurement Lead Perth, Western Australia
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