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https://www.nist.gov/publications/nist-micronutrients-measurement-quality-assurance-program-winter-2012-comparability
NIST Micronutrients Measurement Quality Assurance Program Winter 2012 Comparability Studies Results...
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fa
quality assurance program
comparability studies
nist
micronutrients
measurement