A method for controlling a laboratory system or device comprising at least one pipettor with a pressure sensor, at least one humidity sensor, at least one temperature sensor, and a control unit. The control unit receiving a humidity value from the humidity sensor and a temperature value from the temperature sensor, comparing the pair of humidity and temperature values with a threshold database connected to the control unit, the threshold database comprising, for different pairs of humidity and temperature values, instructions to activate or deactivate an anti droplet control system of the pipettor, determining if the anti droplet system of the pipettor has to be activated or deactivated, activating or deactivating said anti droplet system of the pipettor.

Provided is an automatic analyzer and a control method thereof that are capable of preventing liquid leakage when a dispensing probe that aspirated air and a liquid in order rises. The automatic analyzer for analyzing a sample includes: a dispensing unit configured to dispense the sample and/or a reagent; and a control unit configured to control the dispensing unit. When a dispensing probe provided in the dispensing unit rises after aspirating air and a liquid in order, the control unit aspirates an amount of outside air corresponding to a length of expansion of the air through a tip of the dispensing probe.