BS 4432-1:1995 Methods for determining optical properties of pulp, paper and board - Measurement of diffuse reflectance factor of paper, board and pulps
Specifies the equipment required and the procedures for its calibration.
BS 4432-1:1995 history
2014BS ISO 2469:2014 Paper, board and pulps. Measurement of diffuse radiance factor (diffuse reflectance factor)
2007BS ISO 2469:2007 Paper, board and pulps - Measurement of diffuse radiance factor
1995BS 4432-1:1995 Methods for determining optical properties of pulp, paper and board - Measurement of diffuse reflectance factor of paper, board and pulps