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Standard Reference Materials

NIST supports accurate and compatible measurements by certifying and providing over 1200 Standard Reference Materials® with well-characterized composition or properties, or both.

SRMs are available for order at the NIST store, 

Users of a NIST SRM or RM should ensure that the certificate/report in their possession is current.  Find Current SRM/RM Certificates, Reports of Investigation, and Safety Data Sheets using the NIST Store’s Product Search Box.


Due to world events, all shipping to Russia, Belarus, and Ukraine has ceased.  As a result, the Office of Reference Materials will not be accepting or processing orders to these countries for the foreseeable future. 

News and Updates

An SRM for Measuring Arsenic in Shellfish

NIST has developed many environmentally relevant Standard Reference Materials (SRMs) over the years, including whale blubber, fish and mussel tissues, human

Projects and Programs

Press Coverage

Setting Standards for Stool

Microbiome studies have yielded hundreds of ideas for ways to detect and influence human health, but the field struggles with reproducibility...


General Inquiries about NIST SRMs