PROBLEM TO BE SOLVED: To provide a culture treatment apparatus detecting contact of a chip tip with liquid, an automatic culture apparatus, a contact detection method and a liquid droplet detection method.;SOLUTION: In the automatic culture apparatus sucking the liquid from a culture vessel and other vessels by charge-discharge robot (pipet device) during a culture treatment process, the robot comprises a head (main device), a chip 14 which is installed to an electric pipet installed to the head and serves as a suction port of the liquid, an elevation mechanism (moving device) for relatively moving the head against the vessel a light source 22 for irradiating beams having wavelengths transmitting through the chip 14 to a part of region of the chip 14, a light intensity measuring device 23 for measuring the intensity of lights emitted from the inside of the chip 14 within a measurement region M different from that irradiated by the light from the chip 14, and a contact detection device 24 for detecting the contact of the chip 14 to the surface of the liquid by monitoring the measured value of the light intensity measuring device 23 depending on confirmation of significant variation in the measured value.;COPYRIGHT: (C)2006,JPO&NCIPI
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