Method and apparatus for analysing particles

摘要

The apparatus classifies or counts components in a liquid sample (urine or the like) by processing an image taken of a thin wide flow of the liquid sample. The apparatus comprises sheath liquid supply means (21), sample liquid discharge means (18), a temperature sensor (36) for detecting the ambient temperature, a temperature measuring circuit (38) for determining the temperature on the basis of the output of the temperature sensor, and a driving circuit (34) for driving the sample liquid discharge means at a discharge rate corrected on the basis of an output signal from the temperature measuring circuit. The sheath liquid is supplied at a specific pressure, and the sample liquid discharge rate is corrected on the basis of the ambient temperature. The image may be produced using a high scale factor or a low scale factor and the sample liquid discharge rate is corrected accordingly.