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Reference materials

News and Updates

Projects and Programs

Diffraction Metrology and Standards

Our objective is the development of Standard Reference Materials (SRMs) and quantitative, reproducible, and accurate measurement methods for characterization of

Publications

Preparation and calibration of a Protactinium-231 reference material

Author(s)
Richard M. Essex, Ross W. Williams, Kerri C. Treinen, Ronald Colle, Ryan P. Fitzgerald, Raphael Galea, John Keightley, Jerome J. LaRosa, Lizbeth Laureano-Perez, Svetlana Nour, Leticia S. Pibida
A 231Pa reference material has been characterized for amount of Pa. This reference material is primarily intended for calibration of 233Pa tracers produced for

Tools and Instruments

Reference transmittance densiometer

The Reference Transmission Densitometer (RTD) is the national reference instrument for standard diffuse visual transmittance density measurements for x-ray