Verfahren und Vorrichtung zum automatischer Analysieren von Teilchen in einer Flüssigkeit

摘要

A specimen (20) (e.g. a blood specimen) is sucked up and divided by a sampling valve (17) into first and second samples. The first sample goes to a first measuring unit (18) and basic properties such as the number of red blood cells, the number of white blood cells and the volume of haemoglobin are measured (primary examination). During the primary examination, the second sample is temporarily stored in a sump (30). On the basis of the results of the primary examination, it is decided whether or not to measure additional properties such as the leukocyte classification and the number of reticulocytes (secondary examination). If secondary examination is necessary, the second sample is transferred from the temporary sump (30) to a second measuring unit (34). If secondary examination is not necessary, the second sample is disposed of down a drain (32). The temporary sump (30) makes it possible to suck up a second specimen before or during the secondary examination of the first specimen. Thus, the specimens are processed at a quick rate. Preferably, the apparatus is split into separate modules (10, 12) for the primary and advanced examinations, so that the modules may be customized to suit the particular examinations required.