Abstract: A device for examining a plurality of microdoses of liquids by means of a urality of reagents, said device comprising in combination a dispenser for dispensing microdoses of reagents, comprising a plurality of vertical syringes adapted to be controlled simultaneously and arranged in a fixed pattern, a means for filling said syringes with reagents, provided with a plurality of receptacles containing said reagents and arranged in a fixed pattern corresponding to the pattern of said syringes, a receptacled assembly wherein a plurality of reaction receptacles are arranged in a fixed pattern likewise corresponding to the pattern of said syringes, and a dispenser for dispensing microdoses of liquids. The invention finds application in the testing of liquids, particularly in the field of cytology and immuno-haematology.