1、Designation:D636298(Reapproved 2013)Standard Practice forCertificates of Reference Materials for Water Analysis1This standard is issued under the fixed designation D6362;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of las
2、t revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers the information that must beprovided on certificates of analysis of reference materialsdesignated to supp
3、ort ASTM methods.It provides end users ofthese materials with a defined set of data that is required to beon a certificate of analysis and provides information to assistthe end user in evaluating the independence of the material.Similarly,it provides the suppliers of reference materials witha consis
4、tent format for the presentation of certification data.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibi
5、lity of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1129 Terminology Relating to WaterE826 Practice for Testing Homogeneity of a Metal Lot orBatch in
6、 Solid Form by Spark Atomic Emission Spec-trometry2.2 ISO Standards3ISO Guide 30 Terms and definitions used in connection withreference materialsISO Guide 31 Contents of certificates of reference materialsISO Guide 35 Certification of reference materialsGeneraland statistical principlesISO/REMCO N28
7、03.Terminology3.1 DefinitionsFor definitions of terms used in thispractice,refer to Terminology D1129 and ISO Guide 303.2 Definitions of Terms Specific to This Standard:3.2.1 prepared value,nthe best estimate of the concentra-tion of a given analyte based upon the purity of raw materialsand the meth
8、od of preparation of the material.4.Significance and Use4.1 This practice is designed to assist suppliers and users ofreference materials by identifying the information necessary onthe certificate of analysis of materials designated for use inASTM test methods.This practice is specifically designed
9、toensure that materials suitable for use as either calibration orquality control standards are available.This practice does notdefine a specific certification protocol,but rather providesguidance in the development of adequate data to support theuse of the material as either a calibration or quality
10、 controlstandard.Suppliers are referred to ISO Guide 35 for guidelineson acceptable certification protocols.End users are referred toISO Guide 31 for a more complete description of the elementsof typical certificates of analysis.5.Certificate of Analysis5.1 The certificate of analysis is a summary o
11、f the analysisperformed to support the designated use of the material.As asummary,the certificate must be brief,but it must providesufficient information to allow the potential user of the materialto assess the suitability of the material for his intended use.Therefore,reference material suppliers a
12、re encouraged tosupply method information and analytical data in a summarythat clearly and unambiguously allows the user to make aninformed decision about the suitability of the material.The useof terms as defined by ISO or ASTM is required.5.2 The certificate of analysis must be supported by acerti
13、fication report for the material.The certification reportmust contain the details of the analyses performed to developthe certified values reported on the certificate of analysis.Itmust contain the method(s)used for analysis,details of themethod of preparation,if appropriate,including gravimetric1Th
14、is practice is under the jurisdiction of ASTM Committee D19 on Water andis the direct responsibility of Subcommittee D19.02 on Quality Systems,Specification,and Statistics.Current edition approved Jan.1,2013.Published January 2013.Originallyapproved in 1998.Last previous edition approved in 2008 as
15、D6362 98(2008).DOI:10.1520/D6362-98R13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American Na
16、tional Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 data,supporting instrumental data,and the results of support-ing statistical analysis reported on the certificate of analysis.The certification report must be provided to the end user of thematerial if requested.6.Certificate Headings6.1 The following sections detail the headings to be used onth
