Established in 1967, Solar Light Company Inc. manufactures precision ultraviolet light sources, solar simulators, radiometers, sensors and detectors. Based in Glenside Pa., the firm operates four business units namely, Materials Testing Services, Light Sources, Light Measurement Systems and Atmospheric Monitoring Equipment. The Materials Testing Services unit provides spectral transmittance testing, accelerated ultraviolet degradation testing and spectral output measurement. The firm s Light Sources unit offers SPF and dermatological solar simulators and materials testing light sources. Besides, its Light Measurement Systems unit provides germicidal equipment, radiometers and detectors, 3-D ultraviolet Meter and 6-D safety meters. Atmospheric Monitoring Equipment supplies ozonometers, sunphotometers and ultraviolet monitors. Solar Light Company Inc. is an ASTM and ISO certified firm.