This project is an adaptation of a control mechanism for a laboratory pipettes washer. Pipettes are instruments often used in different types of laboratories, are used to measure and dispense different volumes of liquid. In most plants or laboratories cleaning pipettes is a task that is normally done manually, which is why it was found necessary to design a control for a pipette wash drawing on the wide range of electronic components available for automation, which have affordable costs and generate reliability, the goal is to create a device that helps to clean pipette practice efficiently and to optimize processes in laboratories; based on technical information on types and characteristics of the existing types of pipettes and washers the most appropriate components for this project they were selected.