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The most popular international test standards for Charpy testing, namely ASTM E23, ASTM A370, and ISO 148-1, prescribe significantly different tolerances for the specimen ligament length, ranging from ±0.025 mm (E23) to ±0.01 mm (A370). A study conducted
In FY 2024, of the 23 federal agencies that reported, four federal agencies added a combined total of six government unique standards (GUS) in lieu of voluntary consensus standards (VCS.) No other agency added or rescinded any GUS in lieu of VCS, leaving a
The latest protocols are described for the NIST assignment of fluorescence intensity to calibration spheres or beads, which are used primarily for the accurate measurement of particle intensity in quantitative flow cytometry. Procedures for measuring
Loren Minnich, Gloria Lee, Juana Williams, Isabel Baucom, Jan Konijnenburg, John McGuire, Katrice Lippa
NIST Handbook 44 includes specifications, tolerances, and other technical requirements for weighing and measuring devices. These requirements are intended to encourage the design, installation, testing, and use of weighing and measuring devices that
John McGuire, David Sefcik, Loren Minnich, Isabel Baucom, Katrice Lippa
NIST Handbook 130 includes a compilation of model laws and regulations and related interpretations and guidelines designed to encourage uniformity in the adoption and implementation of weights and measures laws and regulations. The model laws and
John McGuire, David Sefcik, Loren Minnich, Elizabeth Benham, Isabel Baucom, Katrice Lippa
This handbook has been prepared as a procedural guide for the compliance testing of net content statements on packaged goods. Compliance testing of packaged goods is the determination of the conformance results of packaging, distribution, and sale of
Sofia Sotiriadou, Konstantinos Antoniadis, Marc Assael, Viktor Martinek, Marcia Huber
A wide-ranging model for the viscosity surface of methane (CH4) was developed with a range of validity from the triple point-temperature to 625 K and pressures up to 1000 MPa. An extensive literature survey was undertaken and all available experimental
Gregory Strouse, Claire Saundry, Timothy Wood, Philip Bennett, Mary Bedner, Jeremy Schultz
The U.S. science and research ecosystem retains its leadership by actively engaging with the global community through the conduct of mutually beneficial collaborative research and the welcoming of international scientists. Coupled with that, the national
Thirteen large fracture toughness datasets, containing test results obtained in the ductile-to-brittle transition region, have been mined from the open literature and statistically analyzed to obtain repeatability and reproducibility information, which
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
The Global Community Technology Challenge (GCTC) is the smart cities program of the National Institute of Standards and Technology (NIST) in the U.S. Department of Commerce. Since its formation in 2014, the GCTC has built an international partnership of
Elena Jelisic, Boonserm Kulvatunyou, Salifou Sidi Mahaman Malick, Hakju Oh, Joshua Ki
Flexibility is identified as a mandatory characteristic of today's supply chains. There are a few aspects of supply chain flexibility identified in the literature, and one of them is flexible supply chain integration. The standard for exchanging supply
Tracey Johnston, Fabio Casu, Amanda Bayless, Erik Andersson, Robert Brua, Munki Choo, Arthur S. Edison, Hamid R. Eghbalnia, Candace Fleischer, Goncalo J Gouveia, Jeffrey C. Hoch, Gagandeep Kaur, Da-Wei Li, Wimal Pathmasiri, Istvan Pelczer, Fay Probert, Daniel Raftery, David Rovnyak, Michael Secreto, Panteleimon Takis, Mario Uchimiya, David S Wishart, Ali Yilmaz, Lloyd Sumner, Robert Powers, Valerie Copie, Teklab Gebregiworgis
Metabolomics has been a rapidly growing multidisciplinary field with ever increasing demand and usability, attracting a surge of new researchers. While their varied skill sets, questions, and approaches enrich the field with fresh perspectives and
George Caceres, Monique Johnson, John Molloy, SANG BOK LEE, Antonio Montoro Bustos
In response to the growing concern of microplastics (1 µm to 5 mm) accumulation in the environment, the development of analytical methods continues to be critical for the detection and characterization of microplastic particles. In this context, an
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
NIST Handbook 150-3 presents the technical requirements and guidance for the accreditation of laboratories under the National Voluntary Laboratory Accreditation Program (NVLAP) Bulk Asbestos Fiber Analysis program. It is intended for information and use by
Counterfeit semiconductor devices are a major economic and security threat that can cause losses in multiple economic sectors. This problem's impact on national security is serious and growing because every part of the country, such as the military
Dean Jarrett, Albert Rigosi, Yanfei Yang, Alireza Panna, David Newell, Ngoc Thanh Mai Tran, Wei-Chen Lin, Marta Musso, Cheng-Hsueh Yang, Chi-Te Liang, Massimo Ortolano, Randolph Elmquist
A 1 GΩ star-mesh quantized Hall array resistance standard (QHARS) made of thirty-seven quantum Hall effect (QHE) elements was fabricated and tested. The 1 GΩ QHARS has three orders of magnitude fewer QHE elements than a largely series 1 GΩ QHARS, which
NIST is leading and supporting multiple efforts to develop standards for 3D imaging systems used for industrial automation. There are few standards for verifying the performance of these systems and NIST is working with ASTM subcommittee E57.23 on
This report of the Semiconductors and Microelectronics Standards Working Group of the Interagency Committee on Standards Policy (ICSP) provides an overview of Federal government semiconductors and microelectronics standards activities and recommends
The SIM Time Network (SIMTN) was established two decades ago to provide real-time time and frequency comparisons among National Metrology Institutes (NMIs) across the Americas. Since its inception, SIMTN has played a crucial role in strengthening regional
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
Srivalli Telikepalli, Dean Ripple, Michael Carrier, Kristen Steffens, David Newton, Christopher Montgomery, Nicholas Ritchie, Anthony Asmar, Michael Halter
Standard Reference Material (SRM) 1989 is a NIST particle standard produced using photolithographic methods and delivers a certified value for particle size of an irregularly shaped particle. This SRM was developed to allow a more accurate monitoring of
Hua-Jun He, Zhiyong He, Steven Lund, Barbara Paugh, Jennifer McDaniel, Justin Zook, Sierra Miller, Samantha Maragh, Simona Patange, Mahir Mohiuddin, Alessandro Tona, John Elliott, Kenneth Cole, Sheng Lin-Gibson
Reference materials are essential for accurately measuring integrated lentiviral vector (LV) copy number (VCN) and integration sites for the safety and efficacy of lentivirus-based gene therapy. We conducted an interlaboratory study on NIST candidate