| 摘要 |
A concentration measuring device having a spot-application region E, and a configuration capable of measuring the concentration of an object component in the sample liquid X1 dropped on the spot-application region, the concentration measuring device including: a light irradiation device, which is provided on a side below the spot-application region E, for emitting an irradiation light L1 having a wavelength absorbable by a coloring matter in the dropped sample liquid X1. The irradiation light L1 passes through the spot-application region, thereby the sample liquid X1 dropped on the spot-application region E is irradiated with the irradiation light from the side below the spot-application region. As a result, a non-covered region in the spot-application region E can be easily found by visual observation. The spot-application region E is composed of, for example, a through hole 2 formed on the supporting film 1a and a separation membrane 1b that blocks the through hole 2. |
