I've found the Klean Strip brand to be very clean also. Evap'd on a small mirror - after six hours there was no trace.
dumbstruck wrote:Just pour out 5 or 10 ml on a shallow glass dish and let it evaporate. If there is no residue, AT ALL, then it should be safe to use. If you are unsure evaporate a much larger amount into a similarly sized dish.
For what it's worth, I seriously doubt that is pure naptha. Just go hit up a hardware store for some klean strip brand.
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