Purchasing Quality Reference Materials (QRM)

  • Each reference material costs $50 and contains approximately 125g.
  • Shipment costs will be added on a per shipment basis - $15 domestic, $50 international.
  • All prices are US dollars.
Note, some concentrations in the file may be misleading if a small number of labs reported values. The certificate of analysis (COA) provides more accurate values because only results with 16 or more labs reporting are included. Links to the COA are available in the Excel file.

Contact Marilyn Smith with questions.