Abstract
The National Institute of Standards and Technology (NIST) Standard Reference Material® (SRM®) 1849b Infant/Adult Nutritional Formula I delivers certified or non-certified values for over 100 analytes. This material is intended to be used for the evaluation of methods for the determination of elements, amino acids, fatty acids, nucleotides, proximates, sugars, and vitamins and in this and similar matrices. The material was purchased pre-packaged from a commercial vendor. The measurement results used to assign values to the measurands were provided by NIST staff, the manufacturer, and/or interlaboratory comparison exercises. This document describes the material, measurement processes and results, and data analysis used to produce SRM 1849b.
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