Title:
METHOD FOR EVALUATING QUALITY OF ION EXCHANGE RESIN, AND METHOD FOR PRODUCING ULTRAPURE WATER
Document Type and Number:
WIPO Patent Application WO/2023/042723
Kind Code:
A1
Abstract:
This method for evaluating the quality of an ion exchange resin includes: a step for causing ultrapure water that serves as sample water to pass through a container filled with the ion exchange resin; a step for quantifying metal components contained in the ultrapure water after passage through the container; and a step for assessing, on the basis of the result of quantification, whether or not the quality of the ion exchange resin is satisfactory.
Inventors:
TSUDA AKIHIKO (JP)
TSUTANO KYOHEI (JP)
SUGAWARA HIROSHI (JP)
TSUTANO KYOHEI (JP)
SUGAWARA HIROSHI (JP)
Application Number:
PCT/JP2022/033546
Publication Date:
March 23, 2023
Filing Date:
September 07, 2022
Export Citation:
Assignee:
ORGANO CORP (JP)
International Classes:
B01J39/04; B01J41/04; C02F1/42
Foreign References:
| JP2021053547A | 2021-04-08 | |||
| JP2009112944A | 2009-05-28 | |||
| JPH10111283A | 1998-04-28 | |||
| JP2021084044A | 2021-06-03 |
Attorney, Agent or Firm:
MIYAZAKI Teruo et al. (JP)
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