ASTM D6809-20a

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6809 − 20 D6809 − 20a
Standard Guide for
Quality Control and Quality Assurance Procedures for
Aromatic Hydrocarbons and Related Materials
This standard is issued under the fixed designation D6809; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This guide contains non-mandatory Quality Assurance/Quality Control (QA/QC) activities that may be referenced in standards
maintained by ASTM Committee D16 on Aromatic Hydrocarbons and Related Materials.
1.2 This guide does not purport to address all of the issues that may be pertinent to an active QA/QC process.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
D4790 Terminology of Aromatic Hydrocarbons and Related Chemicals
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
2.2 ASTM Document:
MNL7 Manual on Presentation of Data Control Chart Analysis, 6th Edition, Section 3: Control Charts for Individuals
2.3 Other Documents:
Western Electric Company, Inc. Statistical Quality Control Handbook (1982)
Juran’s Quality Control Handbook Fourth Edition (1988)
3. Terminology
3.1 Definitions:
This guide is under the jurisdiction of ASTM Committee D16 on Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsibility of Subcommittee
D16.06 on Statistics and Quality.
Current edition approved June 1, 2020Oct. 1, 2020. Published June 2020October 2020. Originally approved in 2002. Last previous edition approved in 20162020 as
D6809 – 02 (2016).20. DOI: 10.1520/D6809-20.10.1520/D6809-20A.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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*A Summary of Changes section appears at the end of this standard
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D6809 − 20a
3.1.1 precision, n—the degree of agreement of repeated measurement of the same property, expressed in terms of dispersion of
test results about an arithmetical mean result obtained by repetitive testing of a homogeneous sample under specified conditions.
The precision of a test method is expressed quantitatively as a standard deviation computed from the results of a series of controlled
determinations. D4790
3.1.2 quality assurance, n—the general activity of providing evidence needed to establish confidence that the quality function is
being effectively performed; may include quality planning, quality control, quality improvement, quality audit, and reliability.
Juran’s Quality Control Handbook
3.1.3 quality control, n—the specific tools, skills, or techniques through which the quality function is carried out, can be part of
a control process, for example, product inspection. Juran’s Quality Control Handbook
4. Summary of Guide
4.1 This guide contains non-mandatory information to be considered for reference in all ASTM Committee D16 standards on
aromatic hydrocarbons and related materials. This information is provided as a QA/QC system guide for D16 standard users who
do not have an active QA/QC process in their laboratory.
5. Significance and Use
5.1 Quality Control and Quality Assurance practices are important for the optimum operation of testing laboratories using D16
methods for aromatic hydrocarbons and related materials. Quality procedure guidelines, like those described in this document or
other suitably correct QA/QC-related reference, can be useful to optimally perform these methods.
6. Quality Procedure Guidelines
6.1 Statistical Control—To establish the statistical control status of the testing process since the last valid calibration, quality
control (QC) samples should be regularly tested as if they were routine samples. Results should be recorded and immediately
analyzed by control charts, as described in MNL7,
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