... can be cutomized Detailed Product DescriptionLumen and color temperature(CCT) tester for LED CFL products, with patent, different size and requirements ... to you. LED Spectroradiometers Measures:1. It's practical tester to identify or compare the quality of LED lamps,fluorescent ... more accurate than normal 0.5cm ,1m,1.2m.1.5m.2m diameter Lumen tester sphere,different diameter and functions for you. 0 ...