I recently moved into an apartment with an induction stove. After the first use with a designated pan, some white bubble marks have appeared. Has anyone had these types of stains? Any suggestions on how to clean it?
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I have an induction stove and have had similar marks. I think rumtscho is right; these are mineral deposits from water. Water gets between the surface and the pan, most likely because the base of the pan was initially wet (spillage from the pan will mostly end up beside it, and only areas directly under the pan will get significantly hot), the heat of the pan evaporates the water, leaving dry deposits.
There is some good advice on cleaning glass stovetops from eHow, which suggests leaving a "[vinegar-drenched] paper towel on the stove top for an hour", and using ceramic cooktop cleaner if still present.
But I've found these marks can be mostly prevented by making sure the base of your pan is completely dry before putting it on the stove.
After using my new glass-topped stove to do a chicken stir fry. Used the suggested cleaner closely following directions. Allow to cool totally shake and spray cleaner - use special pad and wipe clean and buff with clean paper towel. There were raised prickly bubbles all around he rim of the burner and streaky marks across the center of the burner I was sick. I researched and tried each suggestion with the least abrasive first. FINALLY I used my old stand by BonAmi cleaner made into a paste and rubbed aggressively with the special pad. Wipe with damp paper towel and then I sprayed the area with Windex White Vinegar cleaner and wiped with special microfiber glass cloth. Perfect - like new. However I will note - it took me 20 minutes to do the entire stir-fry dinner and over an hour and a half to clean the stove. If I had it to do over - I'd go coil.
You have a couple of options.
Grade 000 steel wool. I was put onto it by a builder when I was cleaning very dirty windows, we pretty much use it on everything, when its not rusty (throw away when it is) its virtually scratch free for all surfaces but removes tough built on dirt, sopa scum, fades hard water marks and eventually removes them.
You can try a scrapper but you would have to be cautious not to scratch it as this is a possibility. You can also try a product like "Bring it on cleaner" we have used this product and can vouch it is what it says it is. Unfortunately is is pretty costly. Another option is cerium oxide. I wouldn't recommend this option unless you have worked with it before.