TRACEABILITY IN CHEMICAL MEASUREMENT. DEFINITIONS. REFERENCE DOCUMENTS. ELEMENTS AND PRINCIPLES (FOR CREDITING LABS)
Traceability is a property of the results of a measurement. The concept of traceability implies that measurement data are linked to stated references, through an unbroken chain of comparisons. This paper discusses how traceability can be conceived in the concept of chemical measurements, in particular the various elements of traceability chain (e.g., SI units, documented standards, reference materials) to which analytical chemical data may be linked.
Keywords: traceability, chemical measurements, certified reference materials, primary methods, metrology, validation, measurement uncertainty, units