LM-79 is an approved technique for measuring the electrical and photometric properties of SSL products. As a result, URS Lab provides you with accurate LM-79 Testing Laboratory by professionals in a relatively short period of time. Total flux, electrical power, efficacy, chromaticity, and intensity distribution are all covered by LM-79. The five mandatory metrics on the LED Lighting Facts label are derived from the findings of the LM-79 testing Laboratories.