Title:
HARDNESS-MEASURING COMPOSITION, HARDNESS-MEASURING REAGENT KIT, HARDNESS MEASUREMENT METHOD, AND FOULING PREVENTION METHOD FOR HARDNESS-MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/146327
Kind Code:
A1
Abstract:
This invention provides a hardness-measuring composition that is not prone to causing measurement problems due to components of water being measured adhering to a measurement part of a device for measuring the hardness of water. Said hardness-measuring composition contains the following: a pigment containing Eriochrome Black T and/or calmagite; and a sulfate anionic surfactant.
Inventors:
TAKAHASHI JUNICHI (JP)
Application Number:
PCT/JP2015/053632
Publication Date:
October 01, 2015
Filing Date:
February 10, 2015
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
G01N31/22; G01N31/00; G01N33/18
Foreign References:
| JP2011174786A | 2011-09-08 | |||
| JP2005315857A | 2005-11-10 | |||
| JP2007093399A | 2007-04-12 | |||
| JP2010090278A | 2010-04-22 | |||
| JP2012214653A | 2012-11-08 |
Attorney, Agent or Firm:
WATANABE KAORU (JP)
Kaoru Watanabe (JP)
Kaoru Watanabe (JP)
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