Most of the standards and calibration services supplied by Optronic Laboratories are directly traceable to NIST. In those cases where NIST standards are not available, standards from other national laboratories or standards set up at Optronic Laboratories are used. Optronic Laboratories maintains the following primary shelf standards:
- Spectral Irradiance Standards
- Ultraviolet Irradiance Standards
- High Intensity Irradiance Standards
- Total Irradiance Standards
- Spectral Radiance Standards
- Diffuse Spectral Reflectance Standards
- Specular Spectral Reflectance Standards
- Silicon Detector Standards
- Germanium Detector Standards
- Pyroelectric Detector Standards
- Luminous Intensity Standards
- Color Temperature Standards
- Radiance Temperature Standards
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