The apparatus is made of a round-bottom flask A heated on a water bath M. Pipe B is constantly cooled in a water bath R, then enters a tube G where some tobacco C is placed over a cotton wad. The flask is filled with ammoniacal diethyl ether, which is boiled and condensed in B, drips over the tobacco, and then flows back to A through tube d. After 6 hours, the ammonia is removed by spontaneous evaporation and the nicotine titrated with sulphuric acid.
valeg96
Alessandri, P. E. Analisi Volumetrica Applicata Ai Prodotti Commerciali e Industriali; Ulrico Hoepli: Milano, 1895.