| SP-250 Test numbers | Measurement service |
| 35010C–35030C | Optical Pyrometers |
| 35050C–35060C | Radiance Temperature, Ribbon Filament Lamps |
| 39010C–39030C | Spectral Radiance, Ribbon Filament Lamps |
| 39040C–39045C | Spectral Irradiance, Quartz-Halogen Lamps |
| 39050C | Spectral Irradiance, Deuterium Lamps |
| 37010C–37070C | Luminous Intensity Standards |
| 37080C–37130C | Luminous Flux Standards |
| 37140C–37150C | Color Temperature Standards |
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