DISTRIBUTING OPERATION AND DISTRIBUTION PUMP TRANSFER UNIT

PURPOSE:To avoid mixing between samples, by keeping a liquid level sensor contactless with the liquid level during the detection. CONSTITUTION:The surface level of a distribution liquid held in a container is detected with sensors 41 and 42 to measure the depth of the distribution liquid. Then, a distributing chip alpha which is inserted detachably at tips of nozzles 38 and 39 vertically mounted to distribution pump 43 and 44 is driven down to a specified depth based on the said measurement. Then, with the action of the distribution pumps 43 and 44, a specified amount of the distribution liquid is sucked up into the distribution chip alpha while the presence and the liquid surface level of the content liquid of a separate container are detected with the sensors 41 and 42 beforehand. Subsequently, the distributing chip alpha is inserted down by a lowering value based on the measurement together with the nozzles 38 and 39 and with the action of the distribution pumps 43 and 44, the distribution liquid sucked is discharged by a specified amount.