(57) An object of the present invention when performing an experiment to purify the environment pollution such as water and air, it wants to prevent a non-suitability of the time and cost of the loss and the data associated with the transport of these samples. [Configuration] inside a bus-like vehicle having a movement function of a motor vehicle, and at least two water or collecting vessel of air, the purifying device to be applied to one of the collection vessel, the measuring instrument for measuring the elapsed or result by installing a table box for opening and closing of the upper plate, such as can be stored, and the mobile environment purification laboratory.
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