A New Realization of SI for Organic Chemical Measurement: NIST PS1 Primary Standard for Quantitative NMR (Benzoic Acid).
Sign Up to like & getrecommendations! Published in 2018 at "Analytical chemistry"
DOI: 10.1021/acs.analchem.8b02575
Abstract: Metrological traceability to common references supports the comparability of chemical measurement results produced by different analysts, at various times, and at separate places. Ideally, these references are realizations of base units of the International System… read more here.
Keywords: primary standard; measurement; benzoic acid; chemical ... See more keywords
Reply to comment on `Development of a primary standard for absorbed dose from unsealed radionuclide solutions'
Sign Up to like & getrecommendations! Published in 2017 at "Metrologia"
DOI: 10.1088/1681-7575/aa78ff
Abstract: This article is a reply to the comment from Ross (2017 Metrologia 54 610) on our paper (Billas et al 2016 Metrologia 53 1259) 'Development of a primary standard for absorbed dose from unsealed radionuclide… read more here.
Keywords: primary standard; dose unsealed; reply comment; development primary ... See more keywords
Determination of physical adsorption loss of primary standard gas mixtures in cylinders using cylinder-to-cylinder division
Sign Up to like & getrecommendations! Published in 2017 at "Metrologia"
DOI: 10.1088/1681-7575/aa87b8
Abstract: Primary standard gas mixtures (PSMs) are typically prepared in cylinders and the amount-of-substance fractions are determined by purity analysis and gravimetric method. However, the actual amount-of-substance fraction can be different from the gravimetrically determined value… read more here.
Keywords: adsorption; primary standard; cylinder; adsorption loss ... See more keywords
Development of a primary standard for dynamic pressure based on drop weight method covering a range of 10 MPa–400 MPa
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DOI: 10.1088/1681-7575/aaa847
Abstract: In this paper we present the development of a primary standard for dynamic pressures that is based on the drop weight method. At the moment dynamic pressure transducers are typically calibrated using reference transducers, which… read more here.
Keywords: dynamic pressure; pressure; primary standard; weight ... See more keywords
Cryogenic primary standard for optical fibre power measurement
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DOI: 10.1088/1681-7575/aad658
Abstract: NIST has completed commissioning a new, state-of-the-art cryogenic primary standard for optical fibre power measurement and calibration. It establishes for the first time, a direct traceability route between the device under test and primary standard.… read more here.
Keywords: measurement; primary standard; optical fibre; fibre power ... See more keywords
Preparation of primary standard mixtures for atmospheric oxygen measurements with less than 1 µmol mol−1 uncertainty for oxygen molar fractions
Sign Up to like & getrecommendations! Published in 2019 at "Atmospheric Measurement Techniques"
DOI: 10.5194/amt-12-2631-2019
Abstract: Abstract. Precise monitoring of changes in atmospheric O2 levels was implemented by preparing primary standard mixtures with less than 1 µmol mol−1 standard uncertainty for O2 molar fractions. In this study, these mixtures were crafted in 10 L… read more here.
Keywords: standard mixtures; uncertainty; primary standard; mol mol ... See more keywords