Dunn-Edwards has introduced Bloc-Rust Premium metal primer in white and red oxide that uses an advanced waterborne alkyd technology. It offers corrosion resistance and adhesion on a variety of interior and exterior ferrous and non-ferrous metal surfaces. This alkyd emulsion formula provides the superior application properties of an oil-based primer, according to the company. It is easy to apply and has excellent flow and leveling for a smooth finish. Unlike an oil-based primer, it is low odor and fast drying. To demonstrate performance, ferrous metal panels were primed with Bloc-Rust Premium and other leading water-based rust inhibitive primers. The panels were exposed to continuous salt air and fog conditions that simulate exposure to corrosion-inducing conditions for 12 months. The test results showed Bloc-Rust Premium resisted rust and corrosion development better than any of the competing brands, according to the company. Bloc-Rust Premium does not contain ethylene glycol (EG), which the company removed from its paint formulas in 1984.