JPS6469951A - Carbon dioxide gas detection indicator - Google Patents
Carbon dioxide gas detection indicatorInfo
- Publication number
- JPS6469951A JPS6469951A JP22644887A JP22644887A JPS6469951A JP S6469951 A JPS6469951 A JP S6469951A JP 22644887 A JP22644887 A JP 22644887A JP 22644887 A JP22644887 A JP 22644887A JP S6469951 A JPS6469951 A JP S6469951A
- Authority
- JP
- Japan
- Prior art keywords
- carbon dioxide
- base material
- gas
- adjusting
- dioxide gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
PURPOSE:To make it possible to detect carbon dioxide gas, which is included in gas or liquid simply at a low cost without collecting the carbon dioxide, by dissolving a basic compound, impregnating phenolphthalein reagent, which is made to be basic and colored, into a base material, and adjusting moisture activity. CONSTITUTION:A basic compound is dissolved and phenolphthalein reagent is made to be basic and colored. The reagent is impregnated into a base material, and moisture activity is adjusted. Thereafter, a part of or the entire part of the base material is covered with a transparent plastic thin film, which is characterized by substantial moisture impermeability and high carbon dioxide permeability. The base material is completed screened from the outside. The concentration of the discoloring carbon dioxide is adjusted by adjusting the quantity of the dissolving basic compound, i.e., by adjusting pH. Thus, the carbon dioxide gas, which is included in gas or liquid, can be detected simply at a low cost.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22644887A JPS6469951A (en) | 1987-09-11 | 1987-09-11 | Carbon dioxide gas detection indicator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22644887A JPS6469951A (en) | 1987-09-11 | 1987-09-11 | Carbon dioxide gas detection indicator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6469951A true JPS6469951A (en) | 1989-03-15 |
Family
ID=16845257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22644887A Pending JPS6469951A (en) | 1987-09-11 | 1987-09-11 | Carbon dioxide gas detection indicator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6469951A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005054842A1 (en) * | 2003-12-02 | 2005-06-16 | Yoichi Yamakawa | Humidity indicator |
JP2006528774A (en) * | 2003-07-22 | 2006-12-21 | ステリス インク | Vaporized hydrogen peroxide visual detection device |
JP2007333742A (en) * | 2001-06-14 | 2007-12-27 | Otsuka Pharmaceut Factory Inc | Carbon dioxide gas indicator and package provided with carbon dioxide gas indicator |
JP2008275599A (en) * | 2007-03-30 | 2008-11-13 | Powdertech Co Ltd | Oxygen detector |
JP4240888B2 (en) * | 1999-12-15 | 2009-03-18 | 凸版印刷株式会社 | Carbon dioxide detection ink composition, carbon dioxide indicator using the same, and package with carbon dioxide indicator |
JP2011123026A (en) * | 2009-12-14 | 2011-06-23 | Toppan Printing Co Ltd | Carbon dioxide indicator, and package using the same |
CN103926240A (en) * | 2013-09-30 | 2014-07-16 | 安徽养和医疗器械设备有限公司 | Carbon dioxide absorption indicator |
-
1987
- 1987-09-11 JP JP22644887A patent/JPS6469951A/en active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4240888B2 (en) * | 1999-12-15 | 2009-03-18 | 凸版印刷株式会社 | Carbon dioxide detection ink composition, carbon dioxide indicator using the same, and package with carbon dioxide indicator |
JP2007333742A (en) * | 2001-06-14 | 2007-12-27 | Otsuka Pharmaceut Factory Inc | Carbon dioxide gas indicator and package provided with carbon dioxide gas indicator |
JP2006528774A (en) * | 2003-07-22 | 2006-12-21 | ステリス インク | Vaporized hydrogen peroxide visual detection device |
WO2005054842A1 (en) * | 2003-12-02 | 2005-06-16 | Yoichi Yamakawa | Humidity indicator |
EP1696232A1 (en) * | 2003-12-02 | 2006-08-30 | Yoichi Yamakawa | Humidity indicator |
US7316198B2 (en) | 2003-12-02 | 2008-01-08 | Yoichi Yamakawa | Humidity indicator |
EP1696232A4 (en) * | 2003-12-02 | 2008-12-24 | Yoichi Yamakawa | Humidity indicator |
JP2008275599A (en) * | 2007-03-30 | 2008-11-13 | Powdertech Co Ltd | Oxygen detector |
JP2011123026A (en) * | 2009-12-14 | 2011-06-23 | Toppan Printing Co Ltd | Carbon dioxide indicator, and package using the same |
CN103926240A (en) * | 2013-09-30 | 2014-07-16 | 安徽养和医疗器械设备有限公司 | Carbon dioxide absorption indicator |
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