Norm

NEN-ISO 11476:2016 en

Papier en karton - Bepaling van de Cie-witheid, C/2° ( binnenverlichtingsomstandigheden)

79,70

Over deze norm

Status Definitief
Aantal pagina's 16
Gepubliceerd op 01-08-2016
Taal Engels
NEN-ISO 11476 specifies the procedure to be used for determining the CIE whiteness of papers and boards, in order to obtain values which correspond to the visual appearance of white papers and boards, with or without fluorescent whitening agents, when they are viewed indoors. It is based on radiance factor data obtained over the full visible spectral range (VIS) in contrast to the measurement of ISO brightness, which is limited to the blue region of VIS. This International Standard also specifies the procedures for the determination of CIE tint values and the fluorescent component of CIE whiteness. In addition, it specifies a method for adjustment of the UV-content to correspond to that of CIE illuminant C,[10][12] since the results obtained when fluorescent whitening agents are present are dependent upon the UV-content of the radiation falling upon the sample. The CIE illuminant C is taken to be representative of indoor illumination conditions because it contains a suitable proportion of UV radiation.[7] This method is not applicable to coloured papers containing fluorescent dyes. It is specific to the situation where the fluorescence occurs in the blue region of the visible spectral range. This International Standard is read in conjunction with ISO 2469.

Details

ICS-code 85.060
Nederlandse titel Papier en karton - Bepaling van de Cie-witheid, C/2° ( binnenverlichtingsomstandigheden)
Engelse titel Paper and board - Determination of CIE whiteness, C/2° (indoor illumination conditions)
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