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Significance and Use
ASTM regulations require precision statements in all test methods in terms of repeatability and reproducibility. This practice is used when the number of participating laboratories or materials being tested, or both, in a precision study is less than the number specified by Practice E 691
This practice is based on recommendations for interlaboratory studies and data analysis presented in Practice E 691
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
1.2 Precision estimates developed using this practice will not be statistically equivalent to precision estimates produced by Practice E 691
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 E 691
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 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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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
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
ICS Number Code 13.220.01 (General standards related to fire protection)
UNSPSC Code 60103925(Biology study or activity kits)