Certification of a low value electrolytic conductivity solution using traceable measurements

Autor:	Sidney Pereira Sobral, Isabel Cristina Serta Fraga, J C Lopes, Carla de Matos Ribeiro
Rok vydání:	2013
Předmět:	Chemistry business.industry General Chemical Engineering Uncertainty budget General Chemistry Electrolyte Certification Conductivity Certified reference materials Measurement uncertainty Operations management Safety Risk Reliability and Quality Process engineering business Instrumentation
Zdroj:	Accreditation and Quality Assurance. 18:99-104
ISSN:	1432-0517 0949-1775
DOI:	10.1007/s00769-013-0964-0
Popis:	Reliable measurement results of electrolytic conductivity (EC), in particular for low values, must be metrologically traceable and be based on a realistic measurement uncertainty budget. The use of certified reference materials (CRMs) can help to achieve this goal. This paper presents results from all stages of the certification of an EC CRM with a conductivity of 1.5 μS cm−1, including the preparation of the batch solution and the evaluation of the homogeneity and stability of the bottled CRM. An uncertainty budget is presented for the CRM, including the main contributions from each of these sources. The CRM batch remained stable within its certified uncertainty for more than 1 year.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1e9a91ac069341d31a8d42c8a9ae3d53 https://doi.org/10.1007/s00769-013-0964-0 Zobrazit plný text záznamu Full text from SpringerLink