Purpose of Calibration: Calibration is the process of adjusting and verifying the accuracy of a lux meter. Lux meters are used to measure illuminance, which is the amount of light falling on a surface. Proper calibration ensures that the lux meter provides accurate and reliable measurements. Certification: Calibration services are usually provided by specialized calibration labs or facilities that have the necessary equipment and expertise. These labs should provide certification or a calibration report after the process is complete. Traceability: Calibration labs follow a chain of traceability, which means they compare the measurement device (the lux meter) to a standard of higher accuracy. This standard is typically traceable to national or international standards.