| 摘要 |
PURPOSE:To enable a collection of liquid sample without changing the component of the sample by providing a valve on the lower end part of a tube body extending vertically and by making the valve operatable from the upper part. CONSTITUTION:A collecting unit 1 includes a transparent tube body 2 having a flexibility and a valve 3 fixed to the bottom end of the tube body 2 and is submerged and a liquid sample of the water, etc. whose quality is to be investigated is ascended upto the water level position via the valve 3 and the tube body 2. A scale is printed on the tube body 2 and the depth positioned by the valve 3 of the time when a valve case 3 is descended to under water level can be judged. As the tube body 2 is also transparent, the collecting condition of a liquid sample can be visualized. |
