Abbreviations and acronyms
Proficiency testing

AOAC: Association of Official Analytical Chemists , a non-profit organization tasked with carrying out standardization work for the U.S. government, such as the FDA.

CIL: interlaboratory comparison

Cofrac: Comité Français d'Accréditation (French Accreditation Committee), a non-profit organization, the only national body responsible for certification, accreditation and inspection.

MRC: certified reference material

ERM: external reference material

SI: international system