| 摘要 |
The particle counting apparatus is intended to count the number of particles such as blood corpuscles, by passing through a minute aperture, and detecting the particles electrically. In this particle counting apparatus, the liquid specimen is passed into the minute aperture at a specific flow rate by means of the liquid specimen discharge means (C1), and the particles are counted preliminarily, and the dilution proportion of the liquid specimen is determined when the value of this preceding counting is over a specific value, and according to this dilution proportion, the liquid specimen discharge means (C1) and diluent discharge means (C2) discharge so that the flow rates may be as specified, and the mixture is passed through the minute aperture for main counting. By thus composing, if there are many particles, simultaneous pass does not occur in the detecting region.
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