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Titolo:
How to achieve international comparability for chemical measurements
Autore:
Richter, W;
Indirizzi:
Phys Tech Bundesanstalt, D-38116 Braunschweig, Germany Phys Tech Bundesanstalt Braunschweig Germany D-38116 aunschweig, Germany
Titolo Testata:
ACCREDITATION AND QUALITY ASSURANCE
fascicolo: 10-11, volume: 5, anno: 2000,
pagine: 418 - 422
SICI:
0949-1775(200010/11)5:10-11<418:HTAICF>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
AGREEMENT;
Keywords:
chemical measurements; comparability based on traceability; traceability structures; international equivalence;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
7
Recensione:
Indirizzi per estratti:
Indirizzo: Richter, W Phys Tech Bundesanstalt, Bundesallee 100, D-38116 Braunschweig,Germany Phys Tech Bundesanstalt Bundesallee 100 Braunschweig Germany D-38116
Citazione:
W. Richter, "How to achieve international comparability for chemical measurements", ACCRED Q A, 5(10-11), 2000, pp. 418-422

Abstract

It is the central aim of the current activities of metrology in chemistry to build confidence in the reliability of chemical measurement results so that they are accepted without costly duplication being necessary. An important prerequisite for such confidence is comparability based on traceabilityto recognised common references. ideally the SI units. Since metrology is organised within a national framework according to the national laws and regulations, a two-step procedure is to be followed to achieve international comparability for chemical measurements which is increasingly required as aresult of the globalization of trade and economy: (1) establishment of national traceability structures for chemical measurements and (2) mutual recognition of the national traceability structures on the basis of equivalencecriteria. The first step is at present being taken in many countries. Examples are presented for Germany. The second step has been initiated by the Mutual Recognition Arrangement (MRA) of the Meter Convention for national measurement standards and measurements and calibrations provided by national metrology institutes, which is based on international comparison measurements (key comparisons) carried out on the national standards level. Chemical analysis is included in this process through the Consultative Committer forAmount of Substance (CCQM).

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Documento generato il 23/01/21 alle ore 10:23:29