- 1). Shut off the enamel cooktop, and remove all cookware. Let the cooktop cool completely.
- 2). Prepare to use oxalic acid crystals, which are poisonous. Put on acid-proof gloves, protective garments and safety glasses.
- 3). Fill a pail with 1/2 cup of warm water. Sprinkle 1 tablespoon of oxalic acid crystals into the water. You may purchase oxalic acid crystals at hardware stores.
- 4). Stir the solution until all the oxalic acid crystals are completely dissolved.
- 5). Drench an absorbent sponge in the oxalic acid solution. Tamp the rust-stained portion of the enamel with the saturated sponge to soak the rust in the acid solution.
- 6). Let the acid solution permeate the rust for three minutes. Oxalic acid is extremely powerful and works quickly.
- 7). Saturate a rag with water. Wipe up the oxalic acid solution and the dissolved rust.
- 8). Rinse the rag thoroughly with water. Wipe the enamel again to flush away any acid residue. Thoroughly rinse the enamel cooktop.
- 1). Turn off the enamel cooktop, and remove all cookware. Let the cooktop cool completely.
- 2). Pour 4 ounces of sodium borate into a container. Add 2 ounces of lemon juice, stirring the liquid into the sodium borate. Stir the mixture until it’s smooth.
- 3). Spread the mixture over the rust-stained portion of the enamel using a spatula. Let the mixture dry on the cooktop.
- 4). Saturate a rag with water. Wipe the dried mixture and the dissolved rust off the enamel cooktop.
- 5). Rinse the rag thoroughly with water. Wipe the enamel again to flush away any remaining residue. Thoroughly rinse the enamel cooktop.
Oxalic Acid Method
Sodium Borate and Lemon Juice Method
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