Brightness Reversion Control

There is evidence that pulp will revert in color (brightness reversion) when left standing for more than half an hour. Adding a chelating agent will help control the metal ions that cause brightness reversion, reducing brightness reversion tendencies up to 4 G.E. units. Spraying a solution of peroxide and VERSENEX* 80 chelating agent onto the wet lap of bleached Kraft pulp can provide additional brightness reversion protection during storage and transit.

Dow Chelating Agents for Hydrosulfite Bleaching Applications
VERSENE* 100 chelating agent
VERSENE 100E chelating agent
VERSENE 100 LN chelating agent
VERSENEX 80 chelating agent
VERSENEX 80E chelating agent

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