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Certification of Standard Reference Material® 2693a Bituminous Coal (Nominal Mass Fraction 0.5 % Sulfur)



Thomas W. Vetter, Colleen E. Bryan Sallee, Brian Lang, Anthony F. Marlow, Jennifer Ness, Rick L. Paul, Adam L. Pintar, Bruce Scruggs, Nicholas Sharp, Maria Isabel Vega Martinez, John Sieber


Standard Reference Material (SRM) 2693a Bituminous Coal (Nominal Mass Fraction 0.5 % Sulfur) is intended for use in the evaluation of techniques employed in the determination of sulfur, mercury, chlorine, and ash in coal and materials of a similar matrix. A unit of SRM 2693a consists of 55 g of bituminous coal ground to pass a 250 µm (60 mesh) sieve, homogenized, and packaged in an amber glass bottle and then sealed in an aluminized bag. This publication documents the production, analytical methods, and computations involved in characterizing this product.
Special Publication (NIST SP) - 260-230
Report Number


atomic absorption spectrometry (AAS), bituminous coal, CANSPEX, chlorine, instrumental neutron activation analysis (INAA), particle size analysis (PSA), mercury, prompt gamma-ray activation analysis (PGAA), Standard Reference Material (SRM), sulfur, wavelength dispersive X-ray fluorescence (WDXRF).


Vetter, T. , Bryan Sallee, C. , Lang, B. , Marlow, A. , Ness, J. , Paul, R. , Pintar, A. , Scruggs, B. , Sharp, N. , Vega Martinez, M. and Sieber, J. (2024), Certification of Standard Reference Material® 2693a Bituminous Coal (Nominal Mass Fraction 0.5 % Sulfur), Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online],, (Accessed March 3, 2024)
Created January 25, 2024