2011/2012 pure led At this time, there are no unified standards for the manufacturing of LEDs and debate is ongoing as to the proper ways to test them for brightness, color quality, and lifetime. At Eulum Design we test all of our luminaires and LED light engines to ANSI (American National Standards Institute) standard LM79. This standard defines the latest industry-approved guidelines to test the true output of the luminaire both in total circuit efficacy and lumen output by an independent laboratory. 3
