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Correct. Veritasium actually did a video on exactly this set of items last year[0]. The tl;dr is that NIST has a large collection of items which are rigorously
by jwestbury 3y ago
Correct. Veritasium actually did a video on exactly this set of items last year[0]. The tl;dr is that NIST has a large collection of items which are rigorously produced and tested, with detailed documentation about their composition and test results, which allows companies to test their own products to very specific standards.
For instance, peanut butter has aflatoxins -- known carcinogens. NIST's standard peanut butter has known levels of aflatoxins. By purchasing this peanut butter and testing it on your own peanut-butter-aflatoxin-sensing machine, you can calibrate your machine to detect aflatoxins in peanut butter to a reasonably high precision.
0. https://www.youtube.com/watch?v=esQyYGezS7c https://www.youtube.com/watch?v=esQyYGezS7c