ASTM E1763-06
(Guide)Standard Guide for Interpretation and Use of Results from Interlaboratory Testing of Chemical Analysis Methods (Withdrawn 2015)
Standard Guide for Interpretation and Use of Results from Interlaboratory Testing of Chemical Analysis Methods (Withdrawn 2015)
SIGNIFICANCE AND USE
A written test method is subjected to an ILS to evaluate its performance. The ILS produces a set of statistical estimates that depend upon the method, but also are influenced by the laboratories and test materials involved in the study. For that reason, the ILS task group must interpret these estimates, aided by this guide and using analytical judgment, to decide if the method is suitable to be balloted for publication as a standard. The task group may use this guide to help them prepare the precision and bias statements that are a required part of the method.
SCOPE
1.1 This guide covers procedures to help a task group interpret interlaboratory study (ILS) statistics to state precision and accuracy of a test method and make judgments concerning its range of use.
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.
WITHDRAWN RATIONALE
This guide covered procedures to help a task group interpret interlaboratory study (ILS) statistics to state precision and accuracy of a test method and make judgments concerning its range of use.
Formerly under the jurisdiction of Committee E01 on Analytical Chemistry for Metals, Ores, and Related Materials, this guide was withdrawn in January 2015 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E1763 − 06
StandardGuide for
Interpretation and Use of Results from Interlaboratory
1
Testing of Chemical Analysis Methods
This standard is issued under the fixed designation E1763; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope that depend upon the method, but also are influenced by the
laboratories and test materials involved in the study. For that
1.1 This guide covers procedures to help a task group
reason,theILStaskgroupmustinterprettheseestimates,aided
interpret interlaboratory study (ILS) statistics to state precision
by this guide and using analytical judgment, to decide if the
andaccuracyofatestmethodandmakejudgmentsconcerning
method is suitable to be balloted for publication as a standard.
its range of use.
The task group may use this guide to help them prepare the
1.2 This standard does not purport to address all of the
precision and bias statements that are a required part of the
safety concerns, if any, associated with its use. It is the
method.
responsibility of the user of this standard to establish appro-
5. Interlaboratory Studies
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5.1 Thefollowingstatementisrequiredineachtestmethod:
5.1.1 This test method has been evaluated in accordance
2. Referenced Documents
withPracticeE1601andGuideE1763.Unlessotherwisenoted
2
2.1 ASTM Standards:
intheprecisionandbiassection,thelowerlimitinthescopeof
D6512Practice for Interlaboratory Quantitation Estimate
each method specifies the lowest analyte content that may be
E135Terminology Relating to Analytical Chemistry for
analyzed with acceptable error (defined as a nominal 5% risk
Metals, Ores, and Related Materials
of obtaining a 50% or larger relative difference in results on
E1601Practice for Conducting an Interlaboratory Study to
the same test sample in two laboratories).
Evaluate the Performance of an Analytical Method
NOTE 1—this guide has been found to be useful for calculation of the
interlaboratory quantitation estimate in accordance with Practice D6512,
E1763Guide for Interpretation and Use of Results from
using known reference values in place of the measured values for
Interlaboratory Testing of Chemical Analysis Methods
applicationtothatpractice.Ithasbeenfoundnecessarytoreplacethezero
E1914Practice for Use of Terms Relating to the Develop-
valuefortheblankwithaverysmallnumberinordertoapplythispractice
ment and Evaluation of Methods for Chemical Analysis
to that method to avoid the divide by zero computational error.
6. Required Statistical Information
3. Terminology
6.1 A task group satisfies the requirement for statistical
3.1 For definitions of terms used in this guide, refer to
information if the method includes a table of the ILS statistics
Terminology E135.
prepared in accordance with 6.2 and 6.3 and a summary
3.2 For descriptions of terms used in this guide, refer to
statement selected from the model statements in Section 9.If
Practice E1914.
thetaskgroupwishestoprovidefurtherstatisticalinformation,
it may do so in accordance with the provisions of Section 7.
4. Significance and Use
6.2 Variability Data—List the variability statistics for each
4.1 Awritten test method is subjected to an ILS to evaluate
analyte in a separate table arranged by increasing analyte
its performance.The ILS produces a set of statistical estimates
content. List the number of independent data sets used in the
calculations and the ILS statistics calculated in accordance
1
This guide is under the jurisdiction of ASTM Committee E01 on Analytical
with Practice E1601. Where appropriate, list the material type
ChemistryforMetals,Ores,andRelatedMaterialsandisthedirectresponsibilityof
and reference material identification. Follow the examples of
Subcommittee E01.22 on Laboratory Quality.
Table 1, Table 2, and Table 3.
Current edition approved Nov. 1, 2006. Published November 2006. Originally
6.2.1 If the analytical method includes optional conditions
approved in 1995. Last previous edition approved in 2003 as E1763–98(2003).
DOI: 10.1520/E1763-06.
extending the analyte range (for example, decreased sample
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
portions or multiple calibration curves,) list the ILS statistics
contactASTM Customer Service at service@astm.org. ForAnnual Book ofASTM
for each option separately as shown in Table A3.1 and Table
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. A3.3.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.