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Reference materials

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Displaying 151 - 175 of 1012

Certification of Standard Reference Material(R) 1992 / ERM(R)-FD305 Zeta Potential - Colloidal Silica (Nominal Mass Fraction 0.15 %)

November 24, 2020
Author(s)
Yannic Ramaye, Vikram Kestens, J. Charoud-Got, S. Mazoua, G. Auclair, Tae Joon Cho, Blaza Toman, Vincent A. Hackley, T. Linsinger
This report describes the production of SRM 1992/ERM-FD305, silica particles suspended in a borate buffer, certified for electrophoretic mobility and zeta potential by electrophoretic light scattering (ELS). This material was produced following ISO 17034

Certification of Standard Reference Material(R) 1993 / ERM(R)-FD306 Zeta Potential - Colloidal Silica (Nominal Mass Fraction 2.2 %)

November 24, 2020
Author(s)
Yannic Ramaye, Vikram Kestens, J. Charoud-Got, S. Mazoua, G. Auclair, Tae Joon Cho, Blaza Toman, Vincent A. Hackley, T. Linsinger
This report describes the production of SRM 1993/ERM-FD306, silica particles suspended in a borate buffer, certified for electrophoretic mobility and zeta potential by electrophoretic light scattering (ELS). This material was produced following ISO 17034

Lessons From the NIST Micronutrients Quality Assurance Program for Vitamin C, 1993 to 2015: Sample Stability, Assay Reproducibility, and Use of Controls to Improve Comparability

November 11, 2020
Author(s)
David L. Duewer, Jeanice M. Brown Thomas, Katherine E. Sharpless, S A. Margolis
Vitamin C is a necessary micronutrient that is involved in many biological processes. In preserved human plasma and serum, vitamin C is most meaningfully analyzed as total ascorbic acid (TAA). From 1993 through 2015, the National Institute of Standards and

The certification of electrophoretic mobility/zeta potential of silica particles in aqueous solution: ERM-FD305/SRM 1992

October 27, 2020
Author(s)
Y. Ramaye, V. Kestens, J. Charoud-Got, S. Mazoua, G. Auclair, Tae Joon Cho, Blaza Toman, Vincent A. Hackley, T. Linsinger
This report describes the production of ERM-FD305/SRM 1992, silica nanoparticles suspended in a borate buffer, certified for electrophoretic mobility and zeta potential measurements by electrophoretic light scattering (ELS). This material was produced

Development of a pregnancy-specific reference material for thyroid biomarkers, vitamin D, and nutritional trace elements in serum

October 24, 2020
Author(s)
Ashley Russell, Lisa Kilpatrick, Carolyn Burdette, Denise S. Tevis, Zachary A. Fultz, Michael Nelson, Jeff M. Jarrett, Stephen A. Wise, Brittany Kassim, Stephen E. Long
Background Concentrations of critical metabolites, hormones, and nutritional elements change significantly throughout pregnancy. Therefore, increased matrix complexity is a challenge for the measurement of these biomarkers. To provide a quality assurance

The certification of electrophoretic mobility/zeta potential of silica particles in aqueous solution: ERM-FD306/SRM 1993

October 23, 2020
Author(s)
Yannic Ramaye, Vikram Kestens, J. Charoud-Got, S. Mazoua, G. Auclair, Tae Joon Cho, Blaza Toman, Vincent A. Hackley, T. Linsinger
This report describes the production of ERM-FD306/SRM 1993, silica nanoparticles suspended in a borate buffer, certified for electrophoretic mobility and zeta potential measurements. This material was produced following ISO Guide 17034:2016 and is

Certification of Standard Reference Material(R) 955d, Toxic Elements and Metabolites in Frozen Human Blood

October 15, 2020
Author(s)
Lee L. Yu, Karen E. Murphy, Colleen E. Bryan Sallee, Thomas W. Vetter, Robert C. Hagwood, George C. Caceres, Stephen E. Long, J M. Jarrett, M A. Franklin, J Castro Georgi, D M. Jones, Robert Jones, Z Li, Y L. Sommer, D S. Tevis, K Wallon, C D. Ward, M Maras, S Erdahl, C Gilmer, M Wermers, H Woldeysus, K F. Mehigan, M Morrissette, Christopher D. Palmer, Patrick J. Parsons
Standard Reference Material (SRM) 955d is intended for use in validating analytical methods for measuring toxic elements and mercury species in human blood, and in value assigning locally produced control materials analyzed using the validated methods. A

A Diploid Assembly-based Benchmark for Variants in The Major Histocompatibility Complex

September 22, 2020
Author(s)
Justin M. Zook, Justin M. Wagner, Chen-Shan Chin, Qiandong Zeng, Alexander Dilthey, Tobias Marschall, Mikko Rautiainen, Erik Garrison, Shilpa Garg
Most human genomes are characterized by aligning individual reads to the reference genome, but accurate long reads and linked reads now enable us to construct accurate, phased de novo assemblies. We focus on a medically important, highly variable, 5

A Reference High-Pressure CH4 Adsorption Isotherm for Zeolite Y: Results of an Interlaboratory Study

September 11, 2020
Author(s)
Huong Giang T. Nguyen, Christopher M. Sims, Blaza Toman, Jarod C. Horn, Roger D. van Zee, Mathias Thommes, Riaz Ahmad, Joeri F. Denayer, Gino V. Baron, Emilio Napolitano, Marek Bielewski, Enzo Mangano, Stefano Brandani, Broom Darren, M.J. Benham, Anne Dailly, Frieder Dreisbach, Satyannarayana Edubilli, Sasidhar Gumma, Jens Mollmer, Marcus Lange, Mi Tian, Tim Mays, T. Shigeoka, S. Yamakita, M. Hakuman, Y. Nakada, K. Nakai, Junyoung Hwang, Ronny Pini, Huan Jiang, Armin Ebner, Marjorie Nicholson, James Ritter, Judit Farrando Perez, Carlos Cuadrado, Joaquin Silvestre Albero, Christos Tampaxis, Theodore Steriotis, Daniela Rimnacova, Martina Svabova, Maryna Vorokhta, Hai Wang, Eric Bovens, Nicolas Heymans, Guy de Weireld
This paper reports the results of an international interlaboratory study led by the National Institute of Standards and Technology (NIST) on the measurement of high-pressure surface excess methane adsorption isotherms on NIST Reference Material RM 8850