Classifying pipetting procedures with median of pressure curves

A method for classifying a specific pipetting procedure of a laboratory automation device, the method comprising:

• determining a plurality of pressure curves of a plurality of pipetting procedures, which are equivalent to the specific pipetting procedure;
• determining a median curve from the plurality of pressure curves, wherein for each time point of the median curve, a median value of the values of the plurality of pressure curves at this time point is calculated;
• determining a median curve range containing the median curve, the median curve range having an upper limit curve and a lower limit curve being distant a deviation threshold from the median curve;
• controlling the laboratory automation device to perform the specific pipetting procedure and measuring a specific pressure curve during the specific pipetting procedure;
• determining a deviation value of the specific pressure curve with respect to the median curve range, wherein the deviation value is indicative of the specific pressure curve leaving the median range;
• classifying the specific pipetting procedure as erroneous, when the deviation value is greater than a threshold.