Lighting Global has published Technical Note Issue 22, “Integrating Sphere Measurement Part III: Equipment”. This is the final Note in a three part series covering the proper testing equipment and techniques for LED lighting systems. The series is intended as a technical reference and staff teaching aid for laboratories involved in testing pico-powered lighting systems. This final Note discusses the equipment used in an integrating sphere testing system with an emphasis on low cost options for testing pico-powered and solar home system lighting products. It also provides details and references for the specific equipment used by the Lighting Global program for luminous flux measurements.