Measuring device for variable quantities of liquids

摘要

Measuring device for liquids contained in test tubes 1. The pipettes 2 withdraw and deposit liquid to be sampled by moving a rod 7 ending in needles 6. A withdrawal piston 16 linked to the rod 7 has its stroke limited in one direction by a drainage piston 18, and by an adjustable stop 38 in the other direction. The volume withdrawn can therefore be varied. Application to the farm produce industries and to medical analysis laboratories. <IMAGE>