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Standards

Reference materials

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Displaying 1 - 25 of 545

Certification of Standard Reference Material 1474c, a Polyethylene Resin

May 14, 2026
Author(s)
Kalman Migler, Nathanael Heckert, Suzanne Thornton
The melt flow rate of Standard Reference Material (SRM) 1474c, a linear polyethylene (narrow MWD ethylene-hexene copolymer) resin, was determined to be 5.04 g/10 min at 190 °C under a load of 2.16 kg using the ASTM Method D 1238-23a. The average is a

Standardization of 243Am

May 2, 2026
Author(s)
Madeleine Bodine, Lizbeth Laureano-Perez, Ronald Colle, Justin Wilde, Ryan Fitzgerald, Leticia Pibida, Jerome LaRosa, Adam Pearce, Richard Essex, Denis Bergeron
Americium's longest-lived isotope, americium-243, has a half-life of 7367(23) years. It decays into neptunium-239 through alpha decay. Americium has a few practical uses: as a monitor for radioactive contamination and as a tracer for radiochemical

Interlaboratory Comparison with a Reference Measurement Procedure (RMP) for Determining 24,25-Dihydroxvitamin D3 in Human Serum using Liquid Chromatography - Tandem Mass Spectrometry (LC-MS/MS)

April 28, 2026
Author(s)
Stephen Wise, Ekaterina Mineva, Christine Pfeiffer, Hubert Vesper, Etienne Cavalier, Stephenie Peters, Karen Galvin, Kevin Cashman, Andrew Norbert Hoofnagle, Hsuan-Chieh (Joyce) Liao, Emma Williams, Laura Briggs, Adam Kuszak, Grace Hahm, Johanna Camara
An interlaboratory comparison study was conducted among five laboratories for determination of 24,25-dihydroxyvitamin D3 [24,25(OH)2D3] in human serum using liquid chromatography - tandem mass spectrometry (LC-MS/MS) methods. The Centers for Disease

Certification of Standard Reference Material(R) 1568c Rice Flour

January 15, 2026
Author(s)
Laura Wood, Charles Barber, Colleen Bryan Sallee, Monique Johnson, Shaun Kotoski, Stephen Long, Tomohiro Narukawa, Rick Paul, Nicholas Sharp, John Sieber, Maria Isabel Vega Martinez, James Yen, Lee Yu
The National Institute of Standards and Technology (NIST) SRM 1568c Rice Flour has value assignments for over 30 analytes, including arsenic species. This material is intended to be used for the evaluation of methods for the determination of elements and

Certification of Standard Reference Material 2921a

January 12, 2026
Author(s)
David Bunk, David Newton
The National Institute of Standards and Technology (NIST) Standard Reference Material® (SRM®) 2921a Human Cardiac Troponin Complex delivers a certified value for the concentration of human cardiac troponin I in a solution of the human cardiac troponin

Certification of Standard Reference Material(R) 1947a: Great Lakes Fish Tissue

November 28, 2025
Author(s)
Carolyn Burdette, Kelsey Blevins, Ashley Russell, Colleen Bryan Sallee, Amy Cuthbertson, Debra Ellisor, Nathanael Heckert, Jennifer Hoguet, Kevin Huncik, Amanda Moors, Jennifer Ness, Jessica Reiner
Standard Reference Material (SRM) 1947a Great Lakes Fish Tissue is intended to be used in the evaluation of analytical methods for the determination of contaminants, including mercury, polychlorinated biphenyls (PCBs), chlorinated pesticides

Would Human-Robot Interaction Conferences Benefit From More Formal Reporting?

November 3, 2025
Author(s)
Patrick Holthaus, Alessandra Rossi, Snehesh Shrestha, Wing-Yue Louie, aysegul ucar, Daniel Hernandez Garcia, Frank Forster, Antonio Andriella, Shelly Bagchi
In an interdisciplinary and evolving research field like human-robot interaction, clear and precise results reporting is essential for study comparability and replicability. To address the lack of a standard for such reporting and, at the same time

Material Needs and Measurement Challenges for Advanced Semiconductor Packaging: Understanding the Soft Side of Science

August 27, 2025
Author(s)
Ran Tao, Polette Centellas, Stian Romberg, Anthony Kotula, Gale Holmes, Amanda Forster, Christopher Soles, Bob Allen, Edvin Cetegen, William Chen, Jeff Gotro, Mark Poliks
This perspective builds upon insights from the National Institute of Standards and Technology (NIST)-organized workshop, "Materials and Metrology Needs for Advanced Semiconductor Packaging Strategies," held at the 35th annual Electronics Packaging

Certification of 3180 Series Standard Reference Materials(R) Anions in Solution

August 26, 2025
Author(s)
Brian Lang, Thomas Vetter, John Molloy, Antonio Possolo
The 3180 series Standard Reference Materials (SRMs) are single anion solutions intended for use as primary calibration standards for the quantitative determination of a single anion and are a key link in the traceability chain for analysis measurements of

Comparison of Bulk and Micro Sampling Techniques for the Elemental Analysis of SRM 610 and 612

July 25, 2025
Author(s)
Nicholas Sharp, Maria Isabel Vega Martinez, Ruthmara Corzo, Blaza Toman, Rick Paul, Savelas Rabb, Jack Prothero, Jamie Weaver
The glass Standard Reference Materials (SRM) 610 and 612 are frequently used for microanalysis by the forensic and geological communities. However, SRM 610 and 612 were designed and certified to be used as bulk-scale reference materials for the analysis of

A Comparison of Bulk with Micro-Volume Elemental Values for NIST SRM 610 and NIST SRM 612

June 26, 2025
Author(s)
Nicholas Sharp, Maria Isabel Vega Martinez, Ruthmara Corzo, Blaza Toman, Rick Paul, Jamie Weaver
NIST SRM 610 and 612 (Trace Elements in Glass) are routinely used for microanalytical measurements but were designed to be bulk-scale reference materials. This study investigates an approach to quantify the differences between values for elements obtained

Dual-Field Multicollector LG-SIMS Analysis of Mixed U-Pu Reference Particles

June 6, 2025
Author(s)
Evan Groopman, Todd Williamson, Kyle Samperton, Spencer M. Scott, Bryan Foley, Michael Bronikowski, George King, Matthew Wellons
In this study, we demonstrate a new dual-field multicollector protocol for magnetic sector large-geometry secondary ion mass spectrometry that enables concurrent analysis of U and Pu isotopes. We apply this analysis protocol to recently produced mixed U-Pu

NIST Seafood Reference Materials for Authenticating Imported Products

May 21, 2025
Author(s)
Debra Ellisor, Amanda Bayless, William Davis, Tracey Johnston, Mary Gregg, Angela Folz, Antonio Possolo
Seafood is one of the most highly-traded international commodities and product price is determined by characteristics which can be potentially falsified at import (ie. species, provenance, weight), resulting in inflated payouts, encouraging unsustainable

NIST Special Publication 260 NIST.SP.260-256 Certification of Standard Reference Material(R)s 3672a & 3673a: Organic Contaminants in Smokers' Urine (Frozen) & Organic Contaminants in Non-Smokers' Urine (Frozen)

May 14, 2025
Author(s)
Ashley Russell, Carolyn Burdette, Johanna Camara, Nathanael Heckert, Jennifer Hoguet, Kevin Huncik, Jared Ragland, Elena Wood
Standard Reference Material (SRM) 3672a Organic Contaminants in Smokers' Urine (Frozen) and SRM 3673a Organic Contaminants in Non-Smokers' Urine (Frozen) are intended for use in evaluating analytical methods for the determination of selected naturally

Certification of Standard Reference Material(R) 956e Electrolytes in Frozen Human Serum

April 2, 2025
Author(s)
Lee Yu, Steven Christopher, Regina Easley, Monique Johnson, Dennis Leber, Thomas Vetter, Jason Waters, Charles Barber, Karen Murphy, Laura Wood, Stephen Chin, Murli Narayan, Alexander Rhodes, Michael Nash
The National Institute of Standards and Technology (NIST) Standard Reference Material® (SRM®) 956e Electrolytes in Frozen Human Serum is intended for use in the calibration and validation of procedures and methods employed in clinical analysis for the

Certification of Standard Reference Material(R) 965c Glucose in Frozen Human Serum

March 13, 2025
Author(s)
Amanda Bayless, William Davis, Elena Wood, Abraham Kuri Cruz, Johanna Camara, Blaza Toman, Komal Dahya, Katherine Earl, Chui Tse, Uliana Danilenko, Hubert Vesper
Standard Reference Material (SRM) 965c Glucose in Frozen Human Serum is intended for use in validating methods for the determination of glucose in human serum and plasma. A unit of SRM 965c consists of three ampoules each of four materials: Level 1, Level

A Sensitivity Analysis of Methodological Variables Associated with Microbiome Measurements

January 14, 2025
Author(s)
Samuel Forry, Stephanie Servetas, Jennifer Dootz, Monique Hunter, Jason Kralj, James Filliben, Scott Jackson
The particular experimental methods employed during metagenomic sequencing analyses of microbiome samples can significantly impact the resulting data but typically vary substantially between laboratories. In this study, a full factorial experimental design
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