12. After electrodeposition is complete, add 2 drops of phenolphthalein and neutralize using 1% NH4OH until pink color appears. a. Rinse and allow disc to air dry. b. Flame sample dise and transfer to counting room. 13. Count on alpha spectrometer for 400 minutes. 14. Caleulate dpm of U as follows: U counts 232) counts x dpm 232y added = dpmU A-12-2