Directions: Make sure the GI surface is thoroughly clean and dried prior to application. Apply using brush on the GI surface. Immediately the surface will turn black. Leave for 10 minutes while the solution works the surface then wash it with water and allow to dry. Apply a coating of Metal Primer Zinc Phosphate or Oil Primer Brown before painting.
Health & Safety: This is an acidic solution. Wash with plenty of water in case in contact with skin.