Channel structure, measuring unit, measuring method for measuring liquid, and measuring device for measuring liquid

摘要

As a channel structure capable of attaining reduction in size and improvement in portability of a device having incorporated therein the channel structure, there is provided a channel structure 1 including a liquid storage 10 having a liquid container portion 11 capable of storing liquid and an outlet portion 12, a separation-element housing 20 having arranged therein a separation element between two open ends 21 and 22 thereof, a supply channel 30 connected to the outlet portion 12 of the liquid storage 10 and the one open end 21 of the separation-element housing 20 and causing the liquid storage 10 and the separation-element housing 20 to communicate with one another, and a discharge channel 40 connected to the other open end 22 of the separation-element housing 20. The supply channel 30 includes a liquid-storage-side channel 31 connected to the outlet portion 12 of the liquid storage 10, a separation-element-side channel 32 connected to the separation-element housing 20, and an injection portion 33 located between the liquid-storage-side channel 31 and the separation-element-side channel 32 and being capable of introducing liquid to be measured into the supply channel 30. The liquid storage 10 includes a pressure transmission portion 13 capable of transmitting an external force applied to the channel structure 1, as a variation in a pressure in the liquid storage 10, and is capable of causing liquid stored in the liquid storage 10 to flow out from the outlet portion 12 to the supply channel 30 on the basis of the variation in the pressure in the liquid storage 10.