2017-08-28
[public] 1.28M views, 44.9K likes, 353 dislikes audio only
The National Institute of Standards and Technology, NIST, sells Standard Reference Materials, or SRMs for short. They're analysed, quantified, and certified substances: everything from metals, to elements, to food items... to, yes, freeze-dried urine.
More about NIST and SRMs: https://www.nist.gov/srm
Edited by Michelle Martin, @mrsmmartin
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