Designed for rapidly determining the yellowing properties of different types of pulp grade. Use in studies to optimize both cooking and bleaching processes as well as pulp mill quality control. The apparatus consists of stainless steel vessel that holds thirty- two 25 cm2 pulp specimens. The insulated vessel is heated with an external hot plate as an optional. The reversion obtained after one hour at 1000 C and 100 % RH correlates with natural reversion.

Designed for rapidly determining the yellowing properties of different types of pulp grade. Use in studies to optimize both cooking and bleaching processes as well as pulp mill quality control. The apparatus consists of stainless steel vessel that holds thirty- two 25 cm2 pulp specimens. The insulated vessel is heated with an external hot plate as an optional. The reversion obtained after one hour at 1000 C and 100 % RH correlates with natural reversion.