Use 70% or higher isopropyl alcohol for quick evaporation and strong cleaning. Alcohol + Dish Soap: Add a drop of dish soap to help cut through greasy residue. Alcohol + Hydrogen Peroxide ...
Use a dropper to put 1 drop of room temperature ... do the same thing with drops of alcohol. You were probably able to get way more drops of water on the penny than drops of alcohol. Why do you think ...
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