Indigo Paints Zinc Chromate Primer is an alkyd based metal primer intended for maintenance applications. It consists of rust inhibitive pigments which protect the metal surface from rust. Surface Preparation & Application: Stir contents thoroughly. Clean the surface to be painted by removing all loose particles,grease, dirt, rust etc. Apply Indigo Zinc Chromate Primer using brush or spray after thinning 15-20% with turpentine. Allow the film to dry overnight before applying the topcoat. Advantages Good opacity Good adhesion property