9 Measuring equipment for scientific, commercial, industrial and personal use, namely, analog and digital detectors, monitors, meters, and instrumentation for measuring light, UVA, UVB, UVC, visible, infrared, full spectrum, global radiation, erythema, safety, and custom bandwidths, temperature; radiometers; photometers; spectroradiometers; measuring instruments in the nature of spectral radiance and luminance standards; measuring instruments and light sources in the nature of spectral irradiance and illuminance standards; measuring instruments and light sources in the nature of integrating spheres for measuring radiance, luminance, and irradiance; measuring instruments in the nature of detector standards for measuring spectroradiometric, radiometric, and photometric energy; colorimeters and photometers; imaging photometer comprising of a multichannel spectroradiometer, CCD imaging telescope, measurement displays, and downloadable application software; measuring instruments in the nature of diffuse and specular reflectance calibration standards; precision constant current for operating tungsten filament, deuterium, xenon, and UV lamps, standards, integrating sphere standards of spectral irradiance and calibration sources; radiometer and photometers and accessories, namely, replacement lamps, and software for operating the foregoing; electronic data loggers for measuring light; simulators, UV transmittance analyzers, and instrumentation for reproducing UVA, UVB, UVC, global radiation equivalent of sunlight, visible light, and full spectrum light for scientific, commercial and industrial use, namely, simulators for irradiating biological materials, photovoltaic cell research and testing; Sunscreen Protection Factor (SPF) determination studies