The invention relates to a development of the pipette-like laboratory equipment according to Patent 3409052 and is characterised in that the equipment comprises two [lacuna] arranged so that they can slide on one another in the longitudinal direction [lacuna] and held firmly together by means of hooks engaging into wedge-shaped or similarly designed slots, so that the liquid to be pipetted is enclosed in a tightly sealing manner in a cavity of the one arm by the other arm being slid across, accurate and error-free pipetting being made possible as a result.
