Metal Prep

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    g741
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    Hello: I have a question regarding the instant flashing of metal after rinsing a Phosphoric acid treatment off with water.

    I sandblasted some fenders and running boards. I then treated them with Phosphoric acid to remove any remaining Iron Oxide. This treatment left a residue on the metal which I scrubbed off using water. As the metal dried, it instantly was covered with red Iron Oxide.

    What should I do or what products should be used so that the clean metal does not flash rust before I can get primer on it?

    Thanks in advance for your help. Sid

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