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Author Message   Turnergande Tinkerer Username: Turnergande Post Number: 5 Registered: 07-2006 Rating: N/A Votes: 0 Posted on Thursday, January 25, 2007 - 11:01 pm:    I suppose there's a difference between denatured alcohol and isopropyl but I have used the higher grades of isopropyl with some success. The Wal-Mart pharmacy sold me a 16 oz. bottle of completely denatured & mostly ethyl alcohol (formula 19-190 proof) but it was pricey. Maybe others will have thoughts on the best alcohol options for cleaning lenses, etc.