This Technical Note is Part III in a three-part series examining the proper maintenance and use of integrating sphere light measurement systems. This third Note focuses on low-cost equipment that can be used to accurately measure the light output of small LED-based lighting systems.

This document was produced by Lighting Global Quality Assurance. In February 2020, Lighting Global Quality Assurance evolved to become VeraSol, an independent program offering quality assurance services for solar energy kits and off-grid appliances.