Phosphoric acid as metal pretreatment
(→Published epoxy primer and paint manufacturers' positions on the use of phosphoric acid pretreatments) |
(→Ospho) |
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==Brands of phosphoric acid-based metal pretreatments used for automotive work== | ==Brands of phosphoric acid-based metal pretreatments used for automotive work== | ||
===Ospho=== | ===Ospho=== | ||
− | Ospho is advertised as "a balanced formula of Phosphoric acid, Sodium Dichromate, Surfactants, and Extenders." According to Ospho's, as detailed in [http://www.hotrodders.com/forum/ospho-factory-response-173513.html#post1234300 this post]: | + | Ospho is advertised as "a balanced formula of Phosphoric acid, Sodium Dichromate, Surfactants, and Extenders." According to Ospho's manufacturers, as detailed in [http://www.hotrodders.com/forum/ospho-factory-response-173513.html#post1234300 this post]: |
#Once Ospho has dried, there is no longer any acid on the surface to react with paint. | #Once Ospho has dried, there is no longer any acid on the surface to react with paint. |