| 摘要 |
PROBLEM TO BE SOLVED: To provide a sensor holder and a cleaning member for an immersion type water quality meter, capable of freely changing a sensor attaching part or the direction of a cleaning part and the depth of water and to further provide the immersion type water quality meter using them. SOLUTION: In a sensor holder 1, formed into a rod shaper or a tubular shape and having a sensor-attaching part 2 which attaches a water quality measuring sensor 4 so as to embed the same in a freely detachable manner, provided to the leading end thereof, a bent part 3 bendable within a predetermined angle range is provided to the part on the base part side of the holder of the sensor-attaching part 2.
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