[Automation of hematologic diagnosis: developmental status of instruments for counting and differentiating blood...

There are numerous instruments for routine hematology. Most of them are flow systems and work according to the conductometric principle (Coulter), some according to scatter light or absorption principle. They provide a different number of hematologic parameters automatically or semiautomatically. For research purpose, i.e. cell or particle analysis, are different systems available, operating with scatter light or fluorescence activation; some instruments are able to sort cells in different subpopulations. Other apparatus deliver the complete differential leucocyte count by pattern recognition of conventionally stained smears.