WATER SAMPLING DEVICE-CUM-VISCOSITY COEFFICIENT MEASUREMENT DEVICE AND VISCOSITY COEFFICIENT MEASUREMENT METHOD

摘要

Provided is a small and inexpensive water sampling device which is capable of continuously sampling water a plurality of times at different depths, different locations, different times, and the like, and with minimal disturbance to a surrounding water mass or layer during water sampling. The water sampling device comprises: a narrow pipe in which suctioned samples are stored; a vacuum chamber; an electromagnetic valve which is provided partway along a pipeline and connects the vacuum chamber and one end part of the narrow pipe; a suction port which suctions the samples; and a fluid introduction means which is provided partway along the pipeline and connects the suction port and the other end part of the narrow pipe. By opening the electromagnetic valve, the one end part of the narrow pipe communicates with the vacuum chamber, and a sample is suctioned from the suction port by vacuum suction. The fluid introduction means is characterised in that a fluid that is different from the samples is introduced partway along the suctioned samples such that the samples held inside the narrow tube are partitioned by the different fluid.