1、Designation:D680902(Reapproved 2012)Standard Guide forQuality Control and Quality Assurance Procedures forAromatic Hydrocarbons and Related Materials1This standard is issued under the fixed designation D6809;the number immediately following the designation indicates the year oforiginal adoption or,i
2、n the case of revision,the year of last 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 guide contains non-mandatory Quality Assurance/Quality Control(QA/QC)activities tha
3、t may be referenced instandards maintained by ASTM Committee D16 on AromaticHydrocarbons and Related Materials.1.2 This guide does not purport to address all of the issuesthat may be pertinent to an active QA/QC process.1.3 This standard does not purport to address all of thesafety concerns,if any,a
4、ssociated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory requirements prior to use.2.Referenced Documents2.1 ASTM Standards:2D4790 Terminology of Aromatic Hydrocarbons and RelatedC
5、hemicalsE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method2.2 ASTM Document:MNL7 Manual on Presentation of Data Control ChartAnalysis,6th Edition,Section 3:Control Charts forIndivid
6、uals32.3 Other Documents:Western Electric Company,Inc.Statistical Quality ControlHandbook(1982)4Jurans Quality Control Handbook Fourth Edition(1988)53.Terminology3.1 Definitions:3.1.1 precision,nthe degree of agreement of repeatedmeasurement of the same property,expressed in terms ofdispersion of te
7、st results about an arithmetical mean resultobtained by repetitive testing of a homogeneous sample underspecified conditions.The precision of a test method is ex-pressed quantitatively as a standard deviation computed fromthe results of a series of controlled determinations.D47903.1.2 quality assura
8、nce,nthe general activity of providingevidence needed to establish confidence that the quality func-tion is being effectively performed;may include qualityplanning,quality control,quality improvement,quality audit,and reliability.Jurans Quality Control Handbook3.1.3 quality control,nthe specific too
9、ls,skills,or tech-niques through which the quality function is carried out,can bepart of a control process,for example,product inspection.Jurans Quality Control Handbook4.Summary of Guide4.1 This guide contains non-mandatory information to beconsidered for reference in all ASTM Committee D16 stan-da
10、rds on aromatic hydrocarbons and related materials.Thisinformation is provided as a QA/QC system guide for D16standard users who do not have an active QA/QC process intheir laboratory.5.Significance and Use5.1 Quality Control and Quality Assurance practices areimportant for the optimum operation of
11、testing laboratoriesusing D16 methods for aromatic hydrocarbons and relatedmaterials.Quality procedure guidelines,like those described inthis document or other suitably correct QA/QC-relatedreference,can be useful to optimally perform these methods.6.Quality Procedure Guidelines6.1 Statistical Contr
12、olTo establish the statistical controlstatus of the testing process since the last valid calibration,1This guide is under the jurisdiction of ASTM Committee D16 on AromaticHydrocarbons and Related Chemicals and is the direct responsibility of Subcom-mittee D16.06 on Statistics and Quality.Current ed
13、ition approved Jan.1,2012.Published January 2012.Originallyapproved in 2002.Last previous edition approved in 2007 as D6809 02(2007).DOI:10.1520/D6809-02R12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMSt
14、andards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from ASTM International,100 Barr Harbor Drive,WestConshohocken,PA 19428-2959,www.astm.org.4Available from American Society for Quality(ASQ),600 N.Plankinton Ave.,Milwaukee,WI 53203,http:/www.asq.org
15、.5Available from McGraw-Hill Inc,St.Louis,MO,http:/www.mcgraw-.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 quality control(QC)samples should be regularly tested as ifthey were routine samples.Results should be recorded andimmediately
16、analyzed by control charts,as described in MNL7,or other statistically equivalent techniques.Any out-of-controldata should provide an immediate trigger for an investigationof root cause(s)that might require corrective action.6.2 Selection of the QC SampleChoose an ample quantityof a homogeneous material that is representative of thesample(s)routinely being tested with the testing process,andcapable of being stored without degradation over the intendedperiod of use.Carefully consider the matrix,i
