The invention provides an apparatus (100) and a method for preparing distillation measurement of a liquid, and a liquid analysis system. The device has: a device having: a housing; a heater (101), wherein one orifice plate (103, 203a) selected from a set of standardized orifice plates (203a, 203b, 203c, 203d) can be placed on the heater, and the heater is designed to heat a container (105) which contains a liquid (107) and is placed on the orifice plate (103), in order to carry out a standardized test in order to determine the evaporation properties of the liquid; in particular, an electricalmoving system (110) which is designed to move a heater (101) and to interrupt a further movement of the heater (101) when a pressing force (F) of an orifice plate (103) placed on the heater (101) against a container (105) reaches a threshold value. By means of the device, operation errors are avoided, the orifice plate can be accurately positioned on the flask without errors, and the glass flask is prevented from being damaged due to the action of too high force transmitted from the lower portion through the orifice plate.