The method and collection of particulate matter device of collection of particulate matter device setting

摘要

PROBLEM TO BE SOLVED: To provide a particulate matter collecting device that can precisely measure the amount of collected matters.SOLUTION: The particulate matter collecting device includes: a supporting part as a core; and cotton wound around the supporting part and forming a cylindrical shape, the part of the cotton which forms the outer surface of the cylinder being turned up at the lower end thereof.SELECTED DRAWING: Figure 2