NCSL National Measurement Interlaboratory Comparison Database requirements Page: 1 of 11
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NCSL National Measurement Interlaboratory Comparison
James C. Wheeler Richard B. Pettit*
Navy Primary Standards Laboratory Primary Standards Laboratory 0i ,.4 4
NADEP North Island Sandia National Laboratories . (TI
San Diego, CA 92135 USA Albuquerque, NM 87185 USA
With the recent development of an International Comparisons Database which provides
worldwide access to measurement comparison data between National Measurement
Institutes, there is currently renewed interest in developing a database of comparisons for
calibration laboratories within a country. For many years, the National Conference of
Standards Laboratories (NCSL), through the Measurement Comparison Programs
Committee, has sponsored Interlaboratory Comparisons in a variety of measurement
areas. This paper will discuss the need for such a National database which catalogues and
maintains Interlaboratory Comparisons data. The paper will also discuss future
requirements in this area.
The Internet is bringing many different communities together and metrology is no
different. At the present time, National Measurement Institutes (NMIs) are using the
Internet to interchange aid share measurements and data using tools such at Microsoft
Net-meeting. Use of the Internet and these tools provide the capability for remote
calibrations, training, trouble shooting, data exchange, and real time process control. 
E-mail shortens the time it takes to share information and communicate to several
scientists and engineers in different organizations and countries, all at the same time.
Newsgroups share information at a large scale, both with themselves and with the public.
This paper discusses an opportunity to use the Internet and a U.S. National Measurement
Interlaboratory Comparison Database to share measurement comparison data in the U.S.
The concept of such a U.S. system grew out of the implementation of an International
Comparisons Database (ICDB) that was developed to provide worldwide access to
bilateral measurement comparisons between National Measurement Institutes.  This
paper represents a discussion of an extension of the ICDB to include interlaboratory
comparisons (TLC's) between calibration laboratories within the U.S.
* Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Company, for the United States Department of Energy under Contract DE-
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WHEELER,JAMES C. & PETTIT,RICHARD B. NCSL National Measurement Interlaboratory Comparison Database requirements, article, April 20, 2000; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc710374/m1/1/: accessed January 21, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.