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PUBLICATIONS

110 Labs in World’s Largest Interlaboratory Comparison of LED Test Labs – improving testing competency to support market transformation

Published

Author(s)

Yoshihiro Ohno, Koichi Nara, Peter Bennich, Michael Scholand, Nils Borg

Abstract

The International Energy Agency (IEA) 4E Solid State Lighting Annex initiated a programme starting in 2011 looking at a global laboratory accreditation scheme. The 2013 Interlaboratory Comparison (IC 2013) brought together and compared test results of 110 laboratories around the world on their ability to measure photometric, colorimetric, and electrical quantities. The sample of products took into account the most important products in the different regional markets, but all test samples included integrated LED lamps and LED luminaires. While most laboratories were within the expected levels of agreement, a few extreme outliers were observed which must have been caused by problems meeting the test method requirements. Identification of these large deviations by a few laboratories demonstrates the importance of proficiency testing, as these laboratories would not have been aware of their particular problems without having participated. Overall, this large-scale interlaboratory comparison clarified the level of agreement in measurement results for these products, and will help governments and manufacturers around the world ensure that new LED products sold to consumers and companies are of high quality and meet the claimed performance.
Proceedings Title
ECEEE 2015 Summer Study on energy efficiency (ECEEE stands for European Council for an Energy Efficient Economy)
Conference Dates
June 1-5, 2015
Conference Location
Toulon
Conference Title
ECEEE 2015 Summer Study on energy efficiency
Pub Type
Conferences

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Keywords

Interlaboratory comparison, solid state lighting, LED lighting, LED lamp, measurement, testing, accreditation
Accreditation

Citation

Ohno, Y. , Nara, K. , Bennich, P. , Scholand, M. and Borg, N. (2015), 110 Labs in World’s Largest Interlaboratory Comparison of LED Test Labs – improving testing competency to support market transformation, ECEEE 2015 Summer Study on energy efficiency (ECEEE stands for European Council for an Energy Efficient Economy), Toulon, -1, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=917990 (Accessed October 8, 2025)

Issues

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Created June 1, 2015, Updated February 19, 2017
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