Quantitative dosing of small amounts of liquids

摘要: The invention relates to qualitative dosing of small amounts liquids having a volume microliter or nanoliter order. Such technique is useful for instance productive serial in applications clinical chemistry. In the device invention, flexible bellows (5) attached body (1) define liquid space (15) filled with be dosed and communicate doping tip (19). are provided an actuator (7) operation therefor, constricting cause dose discharged from tip. formed magnet (8) current coil (9), one parts being device, other part movably connected moving end (6) bellows. magnetic generates movements by changing magnitude electric passing through coil. To linearize bellows, centralizer equally spaced helical springs (14) may arranged between device. further directed method based on moved actuator, wherein as individual droplets first accelerating then slowing down motion means actuator. applied production test strips (21) used chemical analyses.