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Significance and Use
4.1 Proficiency testing is a means of securing estimates of the variability of results obtained by different laboratories testing homogeneous materials taken from batch samples when following procedures prescribed in a specific test method.
4.2 This proficiency test program is to be considered a full-scale interlaboratory test, in which a reasonably large number of laboratories participate by testing a series of materials using one or more operators per laboratory and report the data for analysis.
4.2.1 For the purposes of this guide, Full Scale Laboratory Test is defined in Practice D2904. This is not to be confused with the full scale testing terminology and definitions which appear in other test methods, such as flammability, that describe the size of the specimens being tested.
4.4 All data are submitted to the program coordinator at ASTM Headquarters for the preparation and distribution of the proficiency testing program reports. All laboratory data are confidential with no disclosure of lab identity except for each participant's own laboratory. Published reports contain all laboratory test data (coded), statistical analysis of test data, charts plotting test results versus lab code, and other information.
1.1 This guide outlines the Proficiency Test Program for Fabrics. Elements for planning the proficiency test program, selecting the sample fabrics to be used, the testing protocol, and the calculations for the data to be reported are included in this practice.
1.4 The instructions in this guide follow the logic of full scale laboratory tests as described in Practice D2904 and Guide E1301, except with this new guide placing its emphasis on proficiency testing.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D123 Terminology Relating to Textiles
D737 Test Method for Air Permeability of Textile Fabrics
D1230 Test Method for Flammability of Apparel Textiles
D2261 Test Method for Tearing Strength of Fabrics by the Tongue (Single Rip) Procedure (Constant-Rate-of-Extension Tensile Testing Machine)
D2904 Practice for Interlaboratory Testing of a Textile Test Method that Produces Normally Distributed Data
D2906 Practice for Statements on Precision and Bias for Textiles
D3775 Test Method for Warp (End) and Filling (Pick) Count of Woven Fabrics
D5034 Test Method for Breaking Strength and Elongation of Textile Fabrics (Grab Test)
D5035 Test Method for Breaking Force and Elongation of Textile Fabrics (Strip Method)
D6545 Test Method for Flammability of Textiles Used in Childrens Sleepwear
E1301 Guide for Proficiency Testing by Interlaboratory Comparisons
ICS Number Code 59.020 (Processes of the textile industry)
ASTM D6674-01(2013), Standard Guide for Proficiency Test Program for Fabrics, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top