1、Designation:D636298(Reapproved 2018)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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization es
6、tablished in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1129 Terminology Relating to WaterE826 Practice for Testing Hom
7、ogeneity of a Metal Lot orBatch in Solid Form by Spark Atomic Emission Spec-trometry2.2 ISO Standards:3ISO Guide 30 Terms and Definitions Used in Connectionwith Reference MaterialsISO Guide 31 Contents of Certificates of Reference Materi-alsISO Guide 35 Certification of Reference MaterialsGeneraland
8、 Statistical PrinciplesISO/REMCO N2803.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this standard,refer toTerminology D1129 and ISO Guide 30.3.2 Definitions of Terms Specific to This Standard:3.2.1 prepared value,nthe best estimate of the concentra-tion of a given analyte based
9、upon the purity of raw materialsand the method 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 met
10、hods.This practice is specifically designed 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
11、 material as either a calibration or quality 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.
12、1 The certificate of analysis is a summary of 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
13、use.Therefore,reference material suppliers are 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 certifi
14、cate of analysis must be supported by acertification report for the material.The certification report1This 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
15、 Oct.15,2018.Published November 2018.Originallyapproved in 1998.Last previous edition approved in 2013 as D6362 98(2013).DOI:10.1520/D6362-98R18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volu
16、me information,refer to the standards Document Summary page onthe ASTM website.3Available from American National 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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of Internatio
