Roadmap for radioanalytical reference and performance evaluation materials for current and emerging issues

Reference materials are fundamental tools for radiochemistry measurements laboratories to establish and evaluate analytical methods, test measurement capabilities, quantify radionuclides, compare analytical results, and establish legal confidence defensibility in measurement results. Over the past decades the focus of low-level environmental reference material producers have adapted to evolving national and international priorities and needs. This document provides a Roadmap of high priority current and future low-level radionuclide Certified Reference and Performance Evaluation Materials that subject-matter experts have identified at NIST and other public workshops (Blueprints) as crucial to metrologists and program directors to address national and international issues. (author)