NF Q03-039-1*NF ISO 2470-1:2016 Paper, board and pulps - Measurement of diffuse blue reflectance factor - Part 1 : indoor daylight conditions (ISO brightness)
2016NF Q03-039-1*NF ISO 2470-1:2016 Paper, board and pulps - Measurement of diffuse blue reflectance factor - Part 1 : indoor daylight conditions (ISO brightness)