Results 311 to 320 of about 371,175 (351)

Are certified reference materials really expensive?

TrAC Trends in Analytical Chemistry, 2003
The aim of the present work is to highlight some considerations to be taken into account regarding the price of certified reference materials (CRMs) used in measurement. This paper examines existing guidelines and some future trends in CRM production, and gives some considerations on CRM costs.
Tony Venelinov, Philippe Quevauviller
openaire   +1 more source

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
openaire   +1 more source

Development of bovine serum albumin certified reference material

Analytical and Bioanalytical Chemistry, 2011
We present the development process for National Institute of Metrology (NIM) bovine serum albumin (BSA) certified reference material (CRM). Each CRM unit contains about 200 mg of purified BSA. The moisture, ignition residue, molecular weight, and high-performance liquid chromatography (HPLC) purity were analyzed and mass spectrometry based protein ...
Liqing, Wu, Bin, Yang, Jiaming, Bi, Jing, Wang   +3 more
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Development of pure certified reference material of stevioside

Food Chemistry, 2018
Pure stevioside was extracted from leaves of Stevia rebaudiana (Bertoni) to be used as a reference material in the instrument calibration or method validation process. The mass fraction was determined by comparison between the mass balance method and quantitative nuclear magnetic resonance (qNMR) spectroscopy. The impurities in the sample were analyzed
Nongluck Tangpaisarnkul, Patoomratana Tuchinda, Prapin Wilairat, Atitaya Siripinyanond, Juwadee Shiowattana, Saksit Nobsathian   +5 more
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Reference materials and certified reference materials for water and food microbiology

Fresenius' Journal of Analytical Chemistry, 1993
The concept of Certified Reference Materials (CRMs) for the verification of the accuracy of analytical methods and the traceability of the results to a CRM, is well accepted in chemistry. The use of Reference Materials (RMs) for intra-laboratory quality control schemes or for round-robin and proficiency testing is well established and follows from ...
E. A. Maier, B. Griepink, P. H. in't Veld, K. Mooijman, A. H. Havelaar   +4 more
openaire   +1 more source

Proper use of certified reference materials?

Accreditation and Quality Assurance, 2004
Certified reference materials (CRMs) are important quality assurance tools in the laboratory. It is, however, not certain they are always used properly. Several guidelines are available on the use of CRMs, but appear to be mostly unknown. The users thus get very little help on the way to proper use.
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Certified reference materials for the determination of mycotoxins

Mycotoxin Research, 2002
A continuing fundamental trend in the area of quality assurance in analytical laboratories are measures that enable trace-ability of analytical results to internationally renowned units, like e.g. the mole. Especially certified reference materials (CRMs) are important tools for achieving this goal. What are CRMs?
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(Certified) reference materials and proficiency testing

Analytical and Bioanalytical Chemistry, 2003
R, Krska, E, Welzig
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Certified Reference Materials (CRMs)

2022
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On (Certified) Reference Materials

Accreditation and Quality Assurance, 2006
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