Algorithms for Homogeneity Testing of Reference Materials of Dispersed and Solid Materials

Production, characterization and certification of reference materials (RMs) are key activities in ensuring the metrological traceability measurement results various industries. One sources RM uncertainty is standard due to heterogeneity. Estimation based on analysis-of-variance method accordance with GOST 8.531-2002, ISO Guide 35:2017. The main difference between developed algorithms 35:2017 elaboration specific suitable for calculation automation, from 8.531-2002 updating heterogeneity when it comparable type A. have been tested examples, their applicability has proven model data. aim study was develop calculating composition properties dispersed solid materials. objectives were analyze set forth 35:2017, test new these algorithms. research shown that more efficient use approach out estimate heterogeneity, modernized taking into account mass smallest representative sample. Separately, should be noted algorithm applicable both studying indicators composition, liquid substances, Thus, updated will used revision harmonize as well increase confidence determining characteristics RMs Russia ensure uniformity measurements at international level.