In 2014, the SSL Annex published a report (2013 IC Final Report) that compared the measurement accuracy of 110 laboratories worldwide testing Light Emitting Diode (LED) lamps and luminaires. That report is intended to help governments and manufacturers ensure that new LED products sold to consumers and companies are of high quality and meet the claimed performance. That work also sought to establish a common proficiency test method for accreditation programmes. For more information, see the News article on IC 2013.
In 2017, the SSL Annex launched the 2017 Interlaboratory Comparison (IC 2017) of goniophotometer measurements. IC 2017 is open to all photometric labs that use goniophotometers for testing LED lighting products, and is organised primarily to compare goniophotometric measurements of LED luminaires and narrow-beam LED lamps.
IC 2017 is designed in compliance with ISO/IEC 17043 to serve as a proficiency test for SSL testing accreditation programmes that recognise this comparison. IC 2017 uses CIE S 025/E:2015, Test Method for LED Lamps, LED Luminaires and LED Modules as the test method for LED performance measurement. If recognised by accreditation bodies, the participant results reports may be used as a proficiency test for CIE S 025 as well as regional test methods such as EN 13032-4 (Europe, equivalent to CIE S 025); LM-79 (USA); KS C 7653 and KS C 7651 (Republic of Korea), JIS C7801 and JIS C8105-5 (Japan), and possibly also for accreditation programmes in China and other countries.