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Interlaboratory comparison of Josephson voltage standards
IEEE Transactions on Instrumentation and Measurement, 2001An interlaboratory comparison of Josephson Voltage Standards (JVS) has been made among 16 national, industrial; and military standards laboratories in North America and one in Europe. The comparison was made at 10 V using a set of four traveling Zener reference standards.
David Deaver +5 more
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Interlaboratory comparison of blood lead determinations
American Industrial Hygiene Association Journal, 1979Results are presented for an interlaboratory proficiency study of blood lead determinations. Samples were pooled from individuals occupationally exposed to lead. Performance of individual laboratories is compared over a two year period. With increased emphasis in recent years on proficiency studies of this type, agreement between laboratories has been ...
C C, Maher, D M, Roettgers, H J, Conlon
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Oxygen Isotope Analysis of Cellulose: An Interlaboratory Comparison
Analytical Chemistry, 1998Oxygen isotope analysis of tree ring cellulose is hindered by the lack of a fast and reliable technique to measure δ18O at natural abundance levels. Most of the existing off-line techniques are not conducive to rapid generation of oxygen isotope data. Further, a comparison between oxygen isotope values of a cellulose sample measured using the different
Saurer, Matthias +3 more
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Analysis of carbonaceous aerosols: interlaboratory comparison
The Analyst, 1998Carbonaceous aerosols are present in many workplace and environmental settings. Some of these aerosols are known or suspect human carcinogens and have been linked to other adverse health effects. Exposure to diesel exhaust is of particular concern because it has been classified as a probable human carcinogen and use of diesel-powered equipment is ...
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Interlaboratory comparison of fluorocarbon measurements
Atmospheric Environment (1967), 1978Abstract Concern for the uncertainty in the precision and accuracy of the past and present halocarbon measurements prompted an informal interlaboratory comparison in 1977. The intercomparison of 16 labs for F11 and F12 gave standard deviations from the mean of 11 to 17%.
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Interlaboratory comparison of nortriptyline levels
Biochemical Medicine, 1978G D, Burrows +6 more
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