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Published online by Cambridge University Press: 06 March 2019
An updated d, I-MATCH procedure [Frevel and Adams, Anal. Chem., 40, 1335-1340 (1968)] is described which permits analysts to compare diverse powder-patterns in a quantitative,objective manner. Criteria are established for rating the quality of a diffraction standard. The d, I-MATCH program has been combined with an efficient SEARCH program to facilitate the quantitative matching of multiphase powder patterns.