0.5ltr: Bona - Blocker Additive - For use with Bona Prime White & Prime Natural Only - (Mix 250ml into each 5ltr Primer)

Additive for reducing bleeding from wood extracts and particularly extracts from knots as well as tannin bleed on white oak. Reduces the risk of stains developing on top of the knots and tannin bleed on white oak. One bottle is sufficient for two 5L cans of Bona White or Bona Natural Primer.