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United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Photometry and Radiometry for United Kingdom (.PDF file)
Transmittance, diffuse, spectral. Spectrally-neutral material, 0 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.01
Spectrophotometer with integrating sphere accessory
Wavelength range: 800 nm to 2500 nm
Bandwidth: 2 nm to 20 nm
Specific measurement conditions: 0/d
Other types of material can also be calibrated
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.05 to 0.22
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0008 to 0.0007
Reference spectrophotometer
Wavelength range: 200 nm to 209 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.05 to 0.22
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0003 to 0.0004
Reference spectrophotometer
Wavelength range: 210 nm to 219 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.05 to 0.22
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0002
Reference spectrophotometer
Wavelength range: 220 nm to 249 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.05 to 0.22
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0002 to 0.0001
Reference spectrophotometer
Wavelength range: 250 nm to 749 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.05 to 0.22
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0002
Reference spectrophotometer
Wavelength range: 750 nm to 2500 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.22 to 0.5
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0007 to 0.0010
Reference spectrophotometer
Wavelength range: 200 nm to 209 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.22 to 0.5
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0004
Reference spectrophotometer
Wavelength range: 210 nm to 219 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.22 to 0.5
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0003
Reference spectrophotometer
Wavelength range: 220 nm to 249 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.22 to 0.5
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0001 to 0.0002
Reference spectrophotometer
Wavelength range: 250 nm to 749 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.22 to 0.5
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0002 to 0.0004
Reference spectrophotometer
Wavelength range: 750 nm to 2500 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.5 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0010 to 0.0017
Reference spectrophotometer
Wavelength range: 200 nm to 209 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.5 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0004 to 0.0009
Reference spectrophotometer
Wavelength range: 210 nm to 219 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.5 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0003 to 0.0006
Reference spectrophotometer
Wavelength range: 220 nm to 249 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.5 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0002 to 0.0005
Reference spectrophotometer
Wavelength range: 250 nm to 749 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 0.5 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0004 to 0.0013
Reference spectrophotometer
Wavelength range: 750 nm to 2500 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 1 to 2
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0017 to 0.0117
Reference spectrophotometer
Wavelength range: 200 nm to 209 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 1 to 2
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0009 to 0.0026
Reference spectrophotometer
Wavelength range: 210 nm to 219 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 1 to 2
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0006 to 0.0022
Reference spectrophotometer
Wavelength range: 220 nm to 249 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007
 
Absorbance, regular, spectral. Spectrally-neutral material, 1 to 2
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.0005 to 0.0022
Reference spectrophotometer
Wavelength range: 250 nm to 749 nm
Bandwidth: < 4 nm
Specific measurement conditions: CIE geometries
Other types of material can also be calibrated
Approved on 07 May 2007