This primer is a water reducible, air-drying, corrosion inhibiting, two-part epoxy system. It is lead and chromate free. b. Use. It is intended for use on pretreated ferrous and non-ferrous substrates, and is compatible with polyurethane topcoats. It contains no more than 2.81 pounds per gallon (340 grams per liter) of volatile organic componds (VOC) as applied. It is a primer for use with CARC paints.