Statistics Meeting Book (February 20, 2019)

Exemplar collaborative study • J. AOAC Int 2012 95(2): 411-418. • “Determination of Phenols and Phenates in Disinfectant Formulations by Liquid chromatography with UV Detection: Collaborative Study” • Analyte: o-benzyl-p-chlorophenol (‘OBPCP’) • Data extracted for single concentration of specified analyte copyright 2018 by Least Cost Formulations, Ltd., all rights reserved. 3 Metamers • ‘C’ metamer: Traditional AOAC approach where data in measured concentrations ‘C’ are statistically analyzed. • ‘pC’ metamer: Data is first transformed to pC = - log 10 (C) before statistically analyzed.

copyright 2018 by Least Cost Formulations, Ltd., all rights reserved.

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