When available, materials from past testing rounds are offered as Quality Reference Materials (QRMs) for a period of up to two years from their testing or until supplies are exhausted. Each portion (bag), except those noted as Minerals Scheme, contains approximately 300 grams of sample. The Minerals Scheme portion (bag) contains approximately 100 grams of sample.

Due to recent shipping restrictions in the US, we can no longer provide our proficiency testing services to Russia and Venezuela.

*Participating Labs: To get the discounted price, the laboratory must be participating in the current year’s AAFCO PT schemes.

**Non-Participating Labs: The lab is not a participant in a current year’s AAFCO PT Scheme.

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View QRM Statistical (Method Performance) Reports


Frequently Asked Questions