| 摘要 |
PROBLEM TO BE SOLVED: To correctly evaluate particle removing performance of a filter by using metal particles.SOLUTION: Metal particles are added to medium liquid to disperse them in a storage tank 10, and sample liquid is prepared. The obtained sample liquid is passed through a filter 18 to be tested to obtain filtrate. The filtrate is sampled, and solution is obtained by dissolving the metal particles contained in the filtrate in chemical liquid. The obtained solution is analyzed by using ICP-MS26, and the amount of metal particles in the sampled filtrate is detected. On the basis of the amount of the metal particles in the filtrate obtained by the ICP-MS26, a filter membrane is evaluated. |
