Reference Materials in Analytical Chemistry: A Guide for by Adolf Zschunke (auth.), Prof. Dr. Adolf Zschunke (eds.)

By Adolf Zschunke (auth.), Prof. Dr. Adolf Zschunke (eds.)

The use of reference fabrics permits effortless and particular fabrics research. there's desire of reference fabrics in commercial, environmental and learn laboratories. below the advice of the German Federal Institute for fabrics study (BAM) the factors for fabrication and alertness of reference fabrics are awarded in a entire shape. The components involved are analytical chemistry, fabrics technological know-how, environmental research, medical and forensic toxicological research, and gasoline and nutrition research. This publication is a customary paintings of reference for each analytical laboratory.

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1 lists the seven modes used at NIST for value-assigning SRMs and RMs for chemical measurements and links the modes to three possible data quality descriptors: NIST certified values, NIST reference values, and NIST information values. A NIST Certified Value represents data for which NIST has the highest confidence in its accuracy in that all known or suspected sources of bias have been fully investigated or accounted for by NIST. A NIST Reference Value is a best estimate of the true value provided by NIST where all known or suspected sources of bias have not been fully investigated by NIST.

United Kingdom. Laboratory of the Goverment Chemist (LGC), Queens Road, Teddington, Middlesex TWll OLY, United Kingdom. National Physical Laboratory (NPL), Teddington, Middlesex TWll OLW, United Kingdom LGC is a privatized national reference institute, offering a wide variety of reference materials. NPL is in charge of producing and keeping the British gas mixture standards. g. steel firms producing steel CRMs or gas suppliers producing gas mixture CRMs). Also, branches of a national industry can establish private institutes for the production and certification of reference materials in their respective fields of interest.

This chapter provides definitions of the terms and descriptions of NIST's current practices for value-assigning SRMs and reference materials (RMs) used for calibrating and/or validating instrumentation and/or methods and procedures used for chemical measurements. The terms and modes as described in this document are applicable for reference materials that support chemical measurements issued by NIST as of October 1, 1998. 3. 1 lists the seven modes used at NIST for value-assigning SRMs and RMs for chemical measurements and links the modes to three possible data quality descriptors: NIST certified values, NIST reference values, and NIST information values.

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