ASTM D6299-07

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An American National Standard
Designation:D6299–07
Standard Practice for
Applying Statistical Quality Assurance and Control Charting
Techniques to Evaluate Analytical Measurement System
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Performance
This standard is issued under the fixed designation D 6299; 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 2. Referenced Documents
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1.1 This practice covers information for the design and 2.1 ASTM Standards:
operationofaprogramtomonitorandcontrolongoingstability D 3764 Practice for Validation of the Performance of Pro-
and precision and bias performance of selected analytical cess Stream Analyzer Systems
measurement systems using a collection of generally accepted D 5191 Test Method for Vapor Pressure of Petroleum Prod-
statistical quality control (SQC) procedures and tools. ucts (Mini Method)
D 6708 Practice for Statistical Assessment and Improve-
NOTE 1—Acomplete list of criteria for selecting measurement systems
ment of Expected Agreement Between Two Test Methods
towhichthispracticeshouldbeappliedandfordeterminingthefrequency
that Purport to Measure the Same Property of a Material
at which it should be applied is beyond the scope of this practice.
E 177 Practice for Use of the Terms Precision and Bias in
However, some factors to be considered include (1) frequency of use of
the analytical measurement system, (2) criticality of the parameter being
ASTM Test Methods
measured, (3) system stability and precision performance based on
E 178 Practice for Dealing With Outlying Observations
historical data, (4) business economics, and (5) regulatory, contractual, or
E 456 Terminology Relating to Quality and Statistics
test method requirements.
E 691 Practice for Conducting an Interlaboratory Study to
1.2 This practice is applicable to stable analytical measure-
Determine the Precision of a Test Method
ment systems that produce results on a continuous numerical
3. Terminology
scale.
1.3 This practice is applicable to laboratory test methods.
3.1 Definitions:
1.4 This practice is applicable to validated process stream
3.1.1 accepted reference value, n—a value that serves as an
analyzers.
agreed-uponreferenceforcomparisonandthatisderivedas(1)
1.5 This practice is applicable to monitoring the differences
atheoreticalorestablishedvalue,basedonscientificprinciples,
between two analytical measurement systems that purport to
(2) an assigned value, based on experimental work of some
measure the same property provided that both systems have
national or international organization, such as the U.S. Na-
beenassessedinaccordancewiththestatisticalmethodologyin
tional Institute of Standards and Technology (NIST), or (3)a
Practice D 6708 and the appropriate bias applied.
consensus value, based on collaborative experimental work
under the auspices of a scientific or engineering group.
NOTE 2—Forvalidationofunivariateprocessstreamanalyzers,seealso
E 177, E 456
Practice D 3764.
3.1.2 accuracy, n—the closeness of agreement between an
NOTE 3—One or both of the analytical systems in 1.5 can be laboratory
test methods or validated process stream analyzers.
observed value and an accepted reference value. E 177,
E 456
1.6 This practice assumes that the normal (Gaussian) model
3.1.3 assignable cause, n—a factor that contributes to
is adequate for the description and prediction of measurement
variation and that is feasible to detect and identify. E 456
system behavior when it is in a state of statistical control.
3.1.4 bias, n—a systematic error that contributes to the
NOTE 4—For non-Gaussian processes, transformations of test results
difference between a population mean of the measurements or
may permit proper application of these tools. Consult a statistician for
test results and an accepted reference or true value. E 177,
further guidance and information.
E 456
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This practice is under the jurisdiction ofASTM Committee D02 on Petroleum
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Products and Lubricants and is the direct responsibility of Subcommittee D02.94 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Coordinating Subcommittee on Quality Assurance and Statistics. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Nov. 1, 2007. Published February 2008. Originally Standards volume information, refer to the standard’s Document Summary page on
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approved in 1998. Last previous edition approved in 2002 as D 6299–02 . the ASTM website.
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