A kit comprising a mechanical sampling pipette with manual actuation, as well as an accessory intended to be mounted reversibly around an upper pipette body forming a handle, said accessory comprising an accessory body as well as means (60, 62, 66, 70, 74, 74') for fixing the accessory body to the upper pipette body, the accessory also comprising, fixed to the accessory body and/or to said fixing means: a) a power supply module; b) at least one sensor (83, 88, 91, 93) power supplied by said power supply module; and - at least one module including: c) a module for displaying the data obtained by the sensor(s); d) an alarm module intended to be activated according to the data obtained by the sensor(s); e) a wireless communication module allowing the accessory to communicate on the one hand with the sensor(s), and on the other hand with an information processing apparatus arranged remotely from the pipette, and in that the accessory body includes a forefinger support hook, intended to form an axial stop for the forefinger of an operator holding the pipette equipped with the accessory during a pipetting operation, said hook defining a recess forming part of said fixing means, said recess receiving a forefinger support hook provided on the upper pipette body forming handle. a) a power supply module; b) at least one sensor (83, 88, 91, 93) power supplied by said power supply module; and - at least one module including: c) a module for displaying the data obtained by the sensor(s); d) an alarm module intended to be activated according to the data obtained by the sensor(s); e) a wireless communication module allowing the accessory to communicate on the one hand with the sensor(s), and on the other hand with an information processing apparatus arranged remotely from the pipette, and in that the accessory body includes a forefinger support hook, intended to form an axial stop for the forefinger of an operator holding the pipette equipped with the accessory during a pipetting operation, said hook defining a recess forming part of said fixing means, said recess receiving a forefinger support hook provided on the upper pipette body forming handle. - at least one module including: c) a module for displaying the data obtained by the sensor(s); d) an alarm module intended to be activated according to the data obtained by the sensor(s); e) a wireless communication module allowing the accessory to communicate on the one hand with the sensor(s), and on the other hand with an information processing apparatus arranged remotely from the pipette, and in that the accessory body includes a forefinger support hook, intended to form an axial stop for the forefinger of an operator holding the pipette equipped with the accessory during a pipetting operation, said hook defining a recess forming part of said fixing means, said recess receiving a forefinger support hook provided on the upper pipette body forming handle. c) a module for displaying the data obtained by the sensor(s); d) an alarm module intended to be activated according to the data obtained by the sensor(s); e) a wireless communication module allowing the accessory to communicate on the one hand with the sensor(s), and on the other hand with an information processing apparatus arranged remotely from the pipette, and in that the accessory body includes a forefinger support hook, intended to form an axial stop for the forefinger of an operator holding the pipette equipped with the accessory during a pipetting operation, said hook defining a recess forming part of said fixing means, said recess receiving a forefinger support hook provided on the upper pipette body forming handle.