A laboratory instrument can display a very precise number without that number being accurate. Reference materials help laboratories investigate the difference.
A sample with carefully established values
The National Institute of Standards and Technology (NIST) introduced Hemp Plant Reference Material 8210 in 2024. It includes assigned values for substances such as cannabinoids and toxic elements, together with information about measurement uncertainty. Laboratories can analyze this material and compare their findings with the reference values to help identify problems in their methods. Source: NIST’s hemp reference material announcement.
Think of checking a scale using a known weight. Repeatedly displaying the same number demonstrates consistency, but comparison with the known weight helps reveal whether the scale is consistently wrong. This analogy is simplified, but it explains why repetition alone is not enough.
The material must fit the question
NIST describes RM 8210 as dried, ground hemp intended for measurement control and research. Its physical composition is part of what makes it useful: a measurement method must work with the material being analyzed, not merely detect an isolated chemical under ideal conditions. Source: NIST description of RM 8210.
A laboratory tool is not a consumer certification
The existence of a reference material does not mean NIST has evaluated every commercial product, endorsed a brand, or approved a laboratory’s entire output. Those would be separate claims requiring separate evidence.
When reading an account of testing quality, look for a specific explanation of how accuracy was evaluated. A statement that names a comparison material and explains its purpose communicates more than an unexplained promise of “advanced testing.” The useful question is what the quality check demonstrated—and how narrowly that conclusion should be applied.
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