... and color temperature ect for the led lamp. Lumen and color temperature(CCT) tester for LED CFL products, with patent, ... accuracy .Specifications: Characteristics:High quality integrating spheres for LED and LED lamps only, nice streamlined shape design,high diffuse ... ,250mm,300mm,500mm,1000mm,1500mm,1750mm,2000m2500mm, 3000mmMain components:1.Optical Fiber:Used for linking the integration spheres ...