ASTM E2653-09

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: E2653 − 09 E2653 − 14 An American National Standard
Standard Practice for
Conducting an Interlaboratory Study to Determine Precision
Estimates for a Fire Test Method with Fewer Than Six
1
Participating Laboratories
This standard is issued under the fixed designation E2653; 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 practice describes the techniques for planning, conducting, analyzing, and treating results of an interlaboratory study
(ILS) for estimating the precision of a fire test method when fewer than six laboratories are available to meet the recommended
minimum requirements of Practice E691. Data obtained from an interlaboratory study are useful in identifying variables that
require modifications for improving test method performance and precision.
1.2 Precision estimates developed using this practice will not be statistically equivalent to precision estimates produced by
Practice E691 because a small number of laboratories are used. The smaller number of participating laboratories will seriously
reduce the value of precision estimates reported by this practice. However, under circumstances where only a limited number of
laboratories are available to participate in an ILS, precision estimates developed by this practice will provide the user with useful
information concerning precision for a test method.
1.3 A minimum of three qualified laboratories is required for conducting an ILS using this practice. If six or more laboratories
are available to participate in an ILS for a given fire test method, Practice E691 shall be used for conducting the ILS.
1.4 Since the primary purpose of this practice is the development of the information needed for a precision statement, the
experimental design in this practice will not be optimum for evaluating all materials, test methods, or as a tool for individual
laboratory analysis.
1.5 Because of the reduced number of participating laboratories a Laboratory Monitor shall be used in the ILS. See Standard
Guide E2335.
1.6 Field of Application—This practice is concerned with test methods that yield numerical values or a series of numerical
values for different fire-test response properties. The numerical values mentioned above are typically the result of calculations from
a set of measurements.
1.7 This practice includes design information suitable for use with the development of interlaboratory studies for test methods
that have categorization (go-no-go) allocation test results. However, it does not provide a recommended statistical practice for
evaluating the go-no-go data.
1.8 This fire standard cannot be used to provide quantitative measures.
1.9 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
E176 Terminology of Fire Standards
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E178 Practice for Dealing With Outlying Observations
1
This practice is under the jurisdiction of ASTM Committee E05 on Fire Standards and is the direct responsibility of Subcommittee E05.15E05.31 on Furnishings and
ContentsTerminology and Services / Functions.
Current edition approved April 1, 2009Dec. 1, 2014. Published May 2009December 2014. Originally approved in 2008. Last previous edition approved in 20082009 as
E2653-08.-09. DOI: 10.1520/E2653-09.10.1520/E2653-14.
2
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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E2653 − 14
E456 Terminology Relating to Quality and Statistics
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E1169 Practice for Conducting Ruggedness Tests
E2335 Guide for Laboratory Monitors
3. Terminology
3.1 Definitions—For formal definitions of stati
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:E2653–08 Designation:E2653–09
Standard Practice for
Conducting an Interlaboratory Study to Determine the
Precision ofEstimates for a Fire Test Method with Fewer
1
Than Six Participating Laboratories
This standard is issued under the fixed designation E 2653; 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 practice describes the techniques for planning, conducting, analyzing, and treating results of an interlaboratory study
(ILS) for estimating the precision of a fire test method when fewer than six laboratories are available to meet the recommended
minimum requirements of Practice E 691. Data obtained from an interlaboratory study are useful in identifying variables that
require modifications for improving test method performance and precision.
1.2 Precision estimates developed using this practice will not be statistically equivalent to precision estimates produced by
Practice E 691 because a small number of laboratories are used. The smaller number of participating laboratories will seriously
reduce the value of precision estimates reported by this practice. However, under circumstances where only a limited number of
laboratories are available to participate in an ILS, precision estimates developed by this practice will provide the user with useful
information concerning precision for a test method.
1.3 Aminimum of three qualified laboratories is required for conducting an ILS using this practice. If six or more laboratories
are available to participate in an ILS for a given fire test method, Practice E 691 shall be used for conducting the ILS.
1.4 Since the primary purpose of this practice is the development of the information needed for a precision statement, the
experimental design in this practice will not be optimum for evaluating all materials, test methods, or as a tool for individual
laboratory analysis.
1.5 Because of the reduced number of participating laboratories a Laboratory Monitor shall be used in the ILS. See Standard
Guide E 2335.
1.6 Field of Application—This practice is concerned with test methods that yield numerical values or a series of numerical
valuesfordifferentfire-testresponseproperties.Thenumericalvaluesmentionedabovearetypicallytheresultofcalculationsfrom
a set of measurements.
1.7 This practice includes design information suitable for use with the development of interlaboratory studies for test methods
that have categorization (go-no-go) allocation test results. However, it does not provide a recommended statistical practice for
evaluating the go-no-go data.
1.8
1.8 This fire standard cannot be used to provide quantitative measures.
1.9 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
E 176 Terminology of Fire Standards
E 177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E 178 Practice for Dealing With Outlying Observations
E 456 Terminology Relating to Quality and Statistics
E 691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E 1169 Practice for Conducting Ruggedness Tests
E 2335 Guide for Laboratory Monitors
1
This practice is under the jurisdiction ofASTM Committee E05 on Fire Standards and is the direct responsibility of Subcommittee E05.15 on Furnishings and Contents.
Current edition approved Oct. 1, 2008. Published November 2008.
Current edition approved April 1, 2009. Published May 2009. Originally approved in 2008. Last previous edition approved in 2008 as E 2653-08.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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E2653–09
3. Terminology
3.1 Definitions—For formal definitions of statistical terms, see Terminology E 456. For formal definitions of fire terms, see
...