- Comes in a 1 quart bottle
- Helps get metal surfaces ready for a fresh coat of paint
- Converts iron oxide (rust) into iron phosphate to create a rust-retardant surface
- Great for both interior and exterior surfaces
A paint job will last longer after an application of OSPHO because subsequent paint coating securely attaches itself so that moisture and oxygen normally do not attack the metal. OSPHO is water-thin, can cover a larger area than paint, and goes on easily. It is equally effective for exterior and interior work alike. SKYCO OSPHO: a balanced formula of Phosphoric, Dichromate, Wetting Agents and Extenders . . . compounded exclusively by the Skybryte Company since 1947 ... recommended by paint manufacturers.