Metal Rescue becomes darker as it removes rust; does it continue to work?

Created by Matt Bender, Modified on Tue, 28 Jun 2022 at 11:08 AM by Matt Bender

Metal Rescue will continue to work even after changing color. The liquid turns darker due to the iron oxide particles removed from the iron/steel. Upon de-rusting a heavily rusted item, the bath will turn darker. Metal Rescue will cease to be effective when the liquid turns completely black.

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