Results 221 to 230 of about 76,962 (259)

(Certified) Reference Materials

2004
This chapter gives an overview of the role of reference materials in quality assurance in analytical laboratories.
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Certified reference materials for thermal analysis

Journal of Thermal Analysis, 1988
Eight inorganic substances recommended by ICTA as temperature standard reference materials for DTA and DSC were studied: KNO3, KClO4, Ag2SO4, K2CrO4, quartz, K2SO4, BaCO3 and SrCO3. The content of pure component in each of these substances was determined by classical chemical analysis.
K. Kostyrko, M. Skoczylas, A. Klee
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COMAR — database for certified reference materials

Fresenius' Zeitschrift für analytische Chemie, 1988
With more than 130 producers of reference materials (RM) throughout the world, it is often difficult to find the best reference material for a specific application. The computer database COMAR has been developed to aid chemists in finding the needed reference material.
H. Klich, J. P. Caliste
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Reference materials for thermal expansion: certified or not?

Thermochimica Acta, 1993
Abstract Many dilatometers in common use can have significant systematic errors in determining linear thermal expansion as evidenced by round-robin measurements on reproducible materials. The need for reference materials to check these dilatometers can usually be met by rods of OFHC Cu, semi-conductor grade Si, W, Pt (rather expensive!), sapphire (of
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Accreditation and the need for certified reference materials

Mikrochimica Acta, 1996
The comparability of data from accredited laboratories is not always as good as customers would desire. A number of reasons for this fact are given. Clients of laboratories do not specify methodology, which may lead to the application of systematically different methods or to methodology with improper performance characteristics.
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Development of pure certified reference material of squalene

Microchemical Journal, 2023
Weizhu Chen, Hua Fang, Wenhui Jin, Hui Chen, Xiaoying Chen, Xiaoyang Huang, Yiping Zhang, Zhuan Hong   +7 more
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(Certified) reference materials and proficiency testing

Analytical and Bioanalytical Chemistry, 2003
R, Krska, E, Welzig
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The accessibility, necessity, and significance of certified reference materials for total selenium content and its species to improve food laboratories' performance

Food Chemistry, 2023
Chintankumar Padariya
exaly  

On (Certified) Reference Materials

Accreditation and Quality Assurance, 2006
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Certification of Uranium Isotope Amount Ratios in a Suite of Uranium Ore Concentrate Certified Reference Materials

Geostandards and Geoanalytical Research, 2022
Andrew Reinhard, Zoltan Meşter, Juris Meija   +2 more
exaly