[Studies on analysis pharmaceutical preparations. XII. Potentiometric titration of caffeine and sodium benzoate].
D001565:Benzoates / Q000032:analysis*; D002110:Caffeine / Q000032:analysis*; D002626:Chemistry, Pharmaceutical; D011199:Potentiometry; D012964:Sodium / Q000032:analysis
D001565:Benzoates; D002110:Caffeine; D012964:Sodium