Roman’s solution

A chemical polish which can be used at room temperature consists of 25 ml dimethylformamide, 20 ml lactic acid, 5 ml phosphoric acid, 10 ml acetic, 15 ml nitric acid and 1 ml sulfuric acid (Koch and Picklesimer, 1967). The above solution is a dilution (with dimethylformamide) of Roman s solution (1966) which was developed for polishing the heavy rare earth elements. A modification of the... 

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