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Metrology

Amount of substance

News and Updates

schematic of sound-wave transmitter and receiver

Sounding Out a New Way to Measure Gas Flow

Researchers at NIST have developed a new — and sound — way to accurately measure the rate at which gas flows in and out of a vessel. The technique, which uses

Events

Projects and Programs

Breathalyzer

Standards Development to Ensure Reliable Breath Analysis in the Field

Ongoing
Numerous volatile organic compounds (VOCs) have been identified in human breath. These compounds can be produced by the body or by organisms in the body (e.g., bacteria or viruses) and provide a non-invasive window into human health. Inexpensive point-of-care devices are being developed to diagnose
Cannabis

NIST Tools for Cannabis Laboratory Quality Assurance

Ongoing
Since the 1970s, cannabis (marijuana and hemp) and its constituent, Δ 9-tetrahydrocannabinol or THC, have been classified as Schedule I controlled substances. Seized evidence is tested by forensic laboratories, which verify the identity of the plant through macro- and microscopic evaluation and the
Flow Cytometry Consortium

NIST Flow Cytometry Standards Consortium 

Ongoing
Advances in cell and gene-based therapeutics as well as other regenerative medicine products have increased the need for high quality, robust, and validated measurements for cell characterization. Flow cytometry, including imaging cytometry, has emerged as an important platform due to its ability to
MMQAP figure

Micronutrients Measurement Quality Assurance Program (MMQAP)

Completed
The MMQAP supported the long-term (months to years) reliability of selected fat- or water-soluble vitamin measurements in human serum and plasma. Results from the comparison studies helped participants to make accurate clinical and health-care decisions as well as to maintain and improve their

Publications

Concordant inter-laboratory derived concentrations of ceramides in human plasma reference materials via authentic standards

Author(s)
Tracey Schock, Christina Jones, Federico Torta, Nils Hoffmann, Bo Burla, Irina Alecu, Makoto Arita, Takeshi Bamba, Steffany A.L. Bennett, Justine BERTRAND-MICHEL, Britta Brugger, Mónica Molina, María Dolores Camacho Muñoz, Antonio Checa, Michael Chen, Michelle Cinel, Benoit COLSCH, Cristina Coman, Bebiana Da Costa Sousa, Alex Dickens, Maria Maria, Finnur Freyr Eiríksson, Hector Gallart-Ayala, Mohan Ghorasaini, Martin Giera, Xue Guan, Mark Haid, Thomas Hankemeier, Amy Harms, Marcus Höring, Michal Holčapek, Thorsten Hornemann, Chunxiu Hu, Andreas Hülsmeier, Julijana Ivanisevic, Harald Köfeler, Sin Man Lam, Jong Cheol Lee, Gerhard Liebisch, Andrea F Lopez-Clavijo, Malena Manzi, Peter Meikle, Maria Monge, Sneha Muralidharan, Anna Nicolaou, Valerie O'Donnell, Matej Oresic, Arvind Ramanathan, Daisuke Saigusa, Heidi Schwartz-Zimmermann, Guanghou Shui, Masatomo Takahashi, Margrét Thorsteinsdóttir, Anthony Tournadre, Hiroshi Tsugawa, Victoria Tyrrell, Grace van der Gugten, Michael Wakelam, Craig Wheelock, Denise Wolrab, Guowang Xu, John Bowden, Kim Ekroos, Robert Ahrends, Markus Wenk
In this community effort, we compared measurements between 34 laboratories from 19 countries, utilizing mixtures of authentic synthetic standards, to quantify

Tools and Instruments