WOCA Industrial Primer is a waterbased clear primer for our air dried oils and polyurethanes. It's low viscosity allows it to penetrate the wood deeply to help provide more uniform colors when used before a stain or oil. It also can be used after a stain, oil or reactactive to minimize color change and provide a base for your choice of WOCA air dried topcoat. Can be tinted upto 5% with WOCA's waterbased pigments.