Title:
DEVICE AND METHOD FOR MEASURING CALCIUM HARDNESS
Document Type and Number:
Japanese Patent JP2015010835
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a device and method for measuring calcium hardness enabling calcium hardness in water to be easily measured with high accuracy.SOLUTION: The device for measuring calcium hardness is provided which includes: a measurement part 20 having a calcium ion selective electrode 14 and an electric conductivity cell 16; and a calculation part 19 which on the basis of electric conductivity, performs correction calculation on a calcium hardness value measured by the calcium ion selective electrode. The calculation part performs correction calculation on the calcium hardness value measured by the calcium ion selective electrode, on the basis of correlation between a ratio of the calcium hardness value obtained by the calcium ion selective electrode to the calcium hardness value obtained by a titration method and the electric conductivity.
Inventors:
MORI SHINTARO
SHIMURA KOSUKE
YATANI HIROMITSU
KONNO HIROKO
SHIMURA KOSUKE
YATANI HIROMITSU
KONNO HIROKO
Application Number:
JP2013134046A
Publication Date:
January 19, 2015
Filing Date:
June 26, 2013
Export Citation:
Assignee:
KURITA WATER IND LTD
DKK TOA CORP
DKK TOA CORP
International Classes:
G01N27/416; G01N27/06; G01N27/26; G01N33/18
Domestic Patent References:
| JPH0427856A | 1992-01-30 | |||
| JPH08338827A | 1996-12-24 | |||
| JPH08134024A | 1996-05-28 | |||
| JPS58190753A | 1983-11-07 |
Foreign References:
| US20090173629A1 | 2009-07-09 |
Attorney, Agent or Firm:
Takeshi Shigeno
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