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| | | Mexico, CENAM (Centro Nacional de Metrologia) | | | Complete CMCs in Photometry and Radiometry for Mexico (.PDF file)
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| Transmittance, diffuse, spectral. Spectrally-neutral material, 0 to 1 | | Absolute expanded uncertainty (k = 2, level of confidence ~95%): 0.003 | | Spectrophotometer | | Wavelength: 240 nm to 900 nm | | Bandwidth: 1 nm to 5 nm | | Specific measurement conditions: normal incidence | | Best measurement capability is valid only using PTB-certified white reference standard; the uncertainty increases for NPL certified references. | | Internal NMI service identifier: CENAM/520-D006-004 |
| | | Reflectance, diffuse, spectral. Spectrally-neutral material, 0.003 to 1 | | Absolute expanded uncertainty (k = 2, level of confidence ~95%): 0.002 to 0.003, varies with measurand | | Spectrophotometer | | Wavelength range: 380 nm to 780 nm | | Bandwidth: 1 nm to 5 nm | | Specific measurement conditions: 8°/d, 8°/t | | Best measurement capability is valid only using PTB-certified white reference standard; the uncertainty increases for NPL certified references. | | Internal NMI service identifier: CENAM/520-D006-003 |
| | | Colour, surface, x, y, Y. General material. x and y, 0.0001 to 1 | | Absolute expanded uncertainty (k = 2, level of confidence ~95%): 0.006 | | Spectrophotometer | | Specific measurement conditions: 8°/d, 8°/t | | Type of material: reflecting material | | Internal NMI service identifier: CENAM/520-D006-003 |
| | | Colour, surface, x, y, Y. General material Y, 0 to 100 | | Absolute expanded uncertainty (k = 2, level of confidence ~95%): 0.21 | | Spectrophotometer | | Specific measurement conditions: 8°/d, 8°/t | | Type of material: reflecting material | | Internal NMI service identifier: CENAM/520-D006-003 |
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