Gas washing bottle
It is used to eliminate, by washing, the impurities contained in a gas.
It consists of a cylindrical glass container, which is closed by a cap provided with two tubes: one of them, which lengthens till the bottom for the inlet of gas, and another one for the vent.
Choosing the appropriate solution, it is also possible to humidify, dry and even separate selectively.
Its inventor was the German chemist Edmund Drechsel (1843-1897).