DISPOSITIF DE MICRODOSAGE POUR LIQUIDES

摘要

The arrangement for microdosing liquids into a test glass contains, arranged in a frame (3), dosing syringes (1) corresponding to the number of liquids to be dosed as well as pipes (2) for conveying the dosed liquids into a test glass (26). The frame (3) is connected to a liquid dose regulator (6). The control unit (13) of the arrangement contains a dose volume and conveying time adjuster (12), the outputs of which are connected to the liquid dose regulator (6), to a step-by-step system (21) for the stepwise rotation of the frame (27) with test glass (26) and to the drive (23) for displacing ends of the pipes (2) backwards and forwards. For dosing the liquid according to a predetermined programme, each dosing syringe (1) has a piston-rod securing device (11) which is connected to a corresponding output (74) of the dosing volume and conveying time adjuster (12). A securing device (16) for the ends of the pipes (2) makes possible the dosing of liquids into a test glass (26) and is connected via three-way cocks (17) to the outputs (19) of the dosing syringes (1). <IMAGE>