| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for exactly count the cell number of bacteria in a shortened time without special pretreatment, for example, cultivation, even in the case of a small cell number, and the device therefor. SOLUTION: As the oxygen dissolved in the liquid culture medium to which the specimen is added is detected with the oxygen electrode 3a and the time needed until the concentration of the dissolved oxygen becomes substantially zero is measured with the chronometer 3b and the number of bacterial cells is output by the cell number output 3e on the basis of this needed time and the calibration curve.
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