know that colour reversion can be measured by using accelerated aging methods.
understand that in post colour measurement the scattering and absorption coefficients are measured by using brightness weighting function instead of Y (C/2) weighting function.
Based on: Hausalo, T., Söderhjelm, L., Chemical analysis of pulps (Chapter 6). In: Levlin, J-E. & Sjöderhelm, L. (ed), Pulp and paper testing (Book 17), Papermaking Science and Technology. Jyväskylä. 1999. Fapet Oy. pp. 111–135.
