Dilutor, type 144, for use with a flame photometer, by Instrumentation Laboratory, Viale Dell Industria, Paderno Dugnano, 3-20037 Italy, 1970-1980 (see note). Dilutor, type 144 1970-1980
Flame photometer, dilutor (see 2 stroke numbers), by Instrumentation Laboratory, Viale Dell Industria, Paderno Dugnano, 3-20037 Italy, 1975-1980. Flame photometer 1975