Purchasing Quality Reference (QRM) Materials

  • QRM Request Form (pdf)
  • Cost is $50.00 per sample. Shipping cost will be added to samples shipped outside of the US.
  • Fill out and follow instructions on the QRM Request Form above.

    Available samples are listed in the excel files below.

    NOTE: Some concentrations in the excel files may be misleading if only a small number of labs reported values. For more accurate values, click on the COA in the files which shows results with 16 or more labs reporting.