| 摘要 |
PROBLEM TO BE SOLVED: To provide a measuring instrument for the diffusion amount of a chemical substance capable of highly precisely measuring the diffusion amount of the chemical substance diffused from respective parts in a room such as a building material, furniture and the like under a condition near to an actual environment. SOLUTION: The measuring instrument for measuring the diffusion amount of the chemical substance diffused from respective parts in a room is composed of at least a cell having an opening part brought into contact with a region to be measured, an air supply pipe for supplying air to the cell and an air discharge pipe equipped with an exhaust means for discharging the chemical substance diffused into the cell from the region to be measured. The air supply pipe has a supplied air changeover means capable of changing over a clean air supply pipe and an environmental air supply pipe, and a chemical substance collecting means for measuring the amount of the chemical substance in clean air and environmental air. The air discharge pipe has an exhaust air changeover means capable of changing over a ventilation discharge pipe for performing the ventilation in the cell and a measuring discharge pipe equipped with the chemical substance collecting means for measuring the amount of the chemical substance diffused into the cell from the region to be measured. COPYRIGHT: (C)2005,JPO&NCIPI
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