... to power the testing lamp Specifications:• Diameter: IS-0.3M (φ0.3m),IS-0.5M (φ0.5m),IS-1.0M (φ1.0m),IS-1 ... the photometry, colorimetry and radiometry parameters measurement:• IS-0.3M/IS-0.5M is suitable for LEDs, LED modules, High ... , fluorescent lamp, CCFL. The flux testing range is 0.1 to 1,999,900 lm• IS-2.0M ... power lamps. The flux testing range is 0.1 to 1,999,900 lm Integrating Sphere (0.3M-2.0M)