ASTM E3264

Full Name

ASTM E3264 – Standard Guide for Homogeneity of Samples and Reference Materials Used for Inter- and Intra-Laboratory Studies


This guide presents techniques and guidance for evaluating and assuring homogeneity of individual samples and bulk materials used for interlaboratory and intra-laboratory studies. This guide is applicable to samples and reference materials used for proficiency testing programs and for interlaboratory studies to determine precision estimates for test methods. It may also be useful for activities related to quality control of testing within a single laboratory.


sample homogeneity; proficiency testing