Home Analysis • Beryllium: Sampling and Analysis (ASTM special technical by Kevin Ashley, editor

Beryllium: Sampling and Analysis (ASTM special technical by Kevin Ashley, editor

By Kevin Ashley, editor

9 peer-reviewed papers give you the most up-to-date study on beryllium pattern assortment, guidance, and size. STP 1473 additionally identifies new components of criteria improvement touching on beryllium sampling and analytical systems. subject matters conceal: Beryllium Disease--Exposure tracking and Standardization matters: an assessment of beryllium illness and efforts to lessen employee exposures via more advantageous tracking tools and the advance of ordinary methodologies. Papers talk about the economic makes use of of beryllium, the background of beryllium ailment, occupational publicity tracking, and standardization of sampling and analytical equipment. Beryllium publicity dimension and Reference Materials--National and foreign views: international efforts and growth in beryllium occupational tracking, in addition to the advance and characterization of beryllium reference fabrics. functions of sampling and analytical how to business hygiene chemistry and perform are highlighted, and wishes for reference fabrics containing beryllium oxide are pointed out. On-Site tracking for Beryllium--Sampling and Analytical points: new transportable analytical equipment for making a choice on hint beryllium in samples from air and surfaces, time qualitative and semi-quantitative equipment, and close to real-time quantitative ideas for ultra-trace Be research.

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A “material of interest” becomes a reference material by being selected and prepared in an appropriate manner: WATTERS ET AL. ON REFERENCE MATERIALS FOR BERYLLIUM ( A material of interest ) ( + ) ( Adequate Preparation (homogeneity, uniformity, etc) = A Reference Material (RM) 31 ) A reference material qualifies as a Certified Reference Material (CRM) when a metrology laboratory (national or commercial) issues a certificate stating that one or more of its property values are certified by a procedure which establishes its traceability to an accurate realization of the unit in which the property values are expressed, and for which each certified value is accompanied by an uncertainty at a stated level of confidence [1].

These are known as Other Agency Reference Materials (OARMs). Under such agreements, the entire lot of materials and the accompanying reports are transferred to the contracting agency. OARMs meet the ISO requirements for CRMs. A NIST Traceable Reference Material (NTRM) is a CRM produced by a commercial supplier with a well defined traceability to the values of standards maintained by NIST. This traceability is established via criteria and protocols defined by NIST that are tailored to meet the needs of the metrological community to be served.

Information Values Certification Modes 4–7 can also result in a NIST information value. Such is the case when the agreement among data from multiple methods is not sufficient to estimate a reliable uncertainty. Information values provide users with supplemental information about the SRM composition. Certified values and reference values have corresponding uncertainties. Information values do not have corresponding uncertainties. 36 BERYLLIUM: SAMPLING AND ANALYSIS Application-Related Issues for Reference Materials Reference Materials for Calibration Reference materials used for the calibration of instruments or analytical methods are, in general, relatively simple mixtures of analytes whose concentrations are very well known.

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