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Published on: October 3, 2018
Quality assurance of reference standards from nine European solar-ultraviolet monitoring laboratories
Julian Gröbner1, Diana Rembges, Alkiviadis F Bais
1European Commission, Joint Research Centre, Institute for Environment and Sustainability, Ispra, Italy. julian.groebner@jrc.it
Abstract:
A program for quality assurance of reference standards has been initiated among nine solar-UV monitoring laboratories. By means of a traveling lamp package that comprises several 1000-W ANSI code DXW-type quartz-halogen lamps, a 0.1-ohm shunt, and a 6-1/2 digit voltmeter, the irradiance scales used by the nine laboratories were compared with one another; a relative uncertainty of 1.2% was found. The comparison of 15 reference standards yielded differences of as much as 9%; the average difference was less than 3%.
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