ASTM D6631-05(2015) - 1.12.2015
 
Significance and Use

3.1 The purpose of an interlaboratory evaluation, as defined in this guide, is to determine the variability of results obtained in different laboratories on equivalent equipment using a prescribed test method.

3.2 The definitions of statistical terms used in this guide are contained in Terminology E456.

 
1. Scope

1.1 This guide covers a simplified statistical procedure for planning and conducting interlaboratory evaluations of test methods.

 
2. Referenced Documents

E456-13a(2022)e1

Standard Terminology Relating to Quality and Statistics (Includes all amendments and changes 4/16/2024).

E691-23

Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

E1345-24

Standard Practice for Reducing the Effect of Variability of Color Measurement by Use of Multiple Measurements

E177-26a

Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods (Includes all amendments and changes 5/14/2026).