CN2720436Y - Test paper ruler for quantitative detecting water hardness - Google Patents
Test paper ruler for quantitative detecting water hardness Download PDFInfo
- Publication number
- CN2720436Y CN2720436Y CN 200420070365 CN200420070365U CN2720436Y CN 2720436 Y CN2720436 Y CN 2720436Y CN 200420070365 CN200420070365 CN 200420070365 CN 200420070365 U CN200420070365 U CN 200420070365U CN 2720436 Y CN2720436 Y CN 2720436Y
- Authority
- CN
- China
- Prior art keywords
- test paper
- water hardness
- paper board
- chi
- slide
- 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.)
- Expired - Fee Related
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model discloses a test paper ruler for quantitative detecting water hardness, comprising a transparent sheet, a protecting sheet and a test paper board. The test paper board is provided between the transparent sheet and the protecting sheet, and the periphery of the test paper board is fixedly connected; the transparent sheet is a strip-shaped transparent plastic sheet whose one surface is provided with two lines of scales in orderly stagger arrangement from small value to big value according to the water hardness and corresponding number value markers. The test paper board is a chromatographic filter paper board impregnated by chrome black T, EDTA magnesium salt, ammonium salt, the buffer solution of sodium borate-sodium hydroxide with pH7-11 and the miscible liquid of sodium diethyl dithiocarbamate DDTC, and the measurement range of the test paper ruler is 1-500mg/L. The utility model has advantages of accurate, quick and direct-viewing test and convenient operation, and the water total hardness can be quantitatively detected on the spot; the utility model overcomes the defect that a larger error can be made by using the naked eye to identify the colors of the test paper, and thereby the technical requirement for monitoring the water hardness can be satisfied.
Description
Technical field
The utility model belongs to water quality inspection technique, particularly a kind of test paper chi of detection by quantitative water hardness.
Background technology
Adopting test paper method to measure water hardness is a kind of easy, analytical technology personnel of fast, not needing specialty, just can measure the method for water hardness at the scene.At present, water treatment and some industrial process waters are more and more higher to the requirement that detects water hardness.Yet the domestic test paper method that adopts all is to determine water hardness according to its reaction back coloring matter change in color.And people's naked eyes have bigger difference to the color discrimination ability, make the measurement result error bigger, can only carry out qualitative and half-quantitative detection, can not satisfy the technical requirement of water quality monitoring, and also there are problems such as easy pollution and inefficacy in test paper.
The utility model content
The purpose of this utility model is the technical matters that exists at existing test paper test water hardness, provides that a kind of test is accurate, quick, easy to operate, resistance tocrocking is strong, but the test paper chi of in situ quantitation detection water hardness.
The utility model is made up of slide, screening glass, test paper plate, test paper plate is arranged between slide and the screening glass, and be fixedly connected all around, described slide is that to have two row in one side be scale by the water hardness value, and its scale is ascending staggered in order and have a strip transparent plastic sheet of respective value mark; Described test paper plate is that the measurement range of test paper chi is 1～500mg/L through the chromatography filter paper plate of eriochrome black T, EDTA magnesium salts, ammonium salt, pH7～11 sodium tetraborates-sodium hydroxide buffer solution, sodium diethyldithiocarbamate DDTC mixed liquor dipping.
Owing to adopt technique scheme, this test paper chi has been avoided in use easy contaminated problem, and the part that for example is soaked with water sample can not touch, more can not with other not the test paper plate of usefulness mix and to put, very tight to user's requirement like this, be easy to bring various operate misss; Contact and deterioration failure in various degree easily with air; In addition, owing to the difference of people's naked eyes, and cause the problem bigger to the determining total hardness of water test error to the color discrimination ability.
It is accurate, quick, directly perceived, easy to operate to the utlity model has test, but in situ quantitation detects You Dian such as determining total hardness of water, has overcome to distinguish that with the naked eye the test paper color exists than mistake De Que Dian, can satisfy the technical requirement to the determining total hardness of water monitoring.
Description of drawings
Fig. 1 is a contour structures synoptic diagram of the present utility model;
Fig. 2 is the side cut-away view of Fig. 1;
Among the figure: 1 screening glass, 2 slidies, 3 test paper plates.
Embodiment
As shown in the figure; a kind of test paper chi of detection by quantitative water hardness; it is made up of slide 2, screening glass 1, test paper plate 3; test paper plate 3 is arranged between slide 2 and the screening glass 1; and be the hot pressing fixed seal connection all around; slide 2 is to be transparent plastic sheet, and to indicate two row in one side be scale by the water hardness value, and its scale is ascending staggered in order and have a corresponding numeric indicia.Screening glass is to be transparent plastic sheet; test paper plate 3 is to be the chromatography filter paper plate, and through eriochrome black T 0.2～1mg/L, EDTA magnesium salts 0.01～0.05mmol/L, ammonium salt 0.5～2g/L, pH7～11 sodium tetraborates-sodium hydroxide buffer solution 4～40mL/100ml, sodium diethyldithiocarbamate DDTC 1～4mg/L mixed liquor dipping 5～8min.Because sealing and fixing around the test paper chi, and have and measure the corresponding scale of water hardness, so use and preserve all very convenient.When detecting water hardness, the test paper chi A end of sealing is cut off, vertically inserted in the water sample to be detected, through 5～10min, Ca in the water then
2+, Mg
2+Generate red complexs with test paper plate 3, the corresponding scale value on the height that this red complex rises along test paper plate 3 and slide 2 both sides can be determined the water hardness value.Test paper chi unit is mg/L, and measurement range is 0～500mg/L (in a calcium).
Claims (4)
1, the test paper chi of detection by quantitative water hardness; it is characterized in that; it is made up of slide, screening glass, test paper plate; test paper plate is arranged between slide and the screening glass; and be sealing and fixing all around; having two row in the one side of slide is scale by the water hardness value, and its scale is ascending staggered in order and have a respective value mark.
2, the test paper chi of detection by quantitative water hardness according to claim 1 is characterized in that described slide is the strip transparent plastic sheet.
3, the test paper chi of detection by quantitative water hardness according to claim 1 is characterized in that described test paper plate is the chromatography filter paper plate through eriochrome black T, EDTA magnesium salts, ammonium salt, pH7～11 sodium tetraborates-sodium hydroxide buffer solution, sodium diethyldithiocarbamate DDTC mixed liquor dipping.
4, the test paper chi of detection by quantitative water hardness according to claim 1, the measurement range that it is characterized in that described test paper chi is 1～500mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070365 CN2720436Y (en) | 2004-08-20 | 2004-08-20 | Test paper ruler for quantitative detecting water hardness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070365 CN2720436Y (en) | 2004-08-20 | 2004-08-20 | Test paper ruler for quantitative detecting water hardness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2720436Y true CN2720436Y (en) | 2005-08-24 |
Family
ID=35009395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420070365 Expired - Fee Related CN2720436Y (en) | 2004-08-20 | 2004-08-20 | Test paper ruler for quantitative detecting water hardness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2720436Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345121A (en) * | 2014-09-13 | 2015-02-11 | 上海绿帝环保科技有限公司 | Detection powder for measuring total hardness of water |
| CN106404767A (en) * | 2016-08-30 | 2017-02-15 | 孙逊 | Cotton swab for fast determining whether total hardness of water reaches standard |
-
2004
- 2004-08-20 CN CN 200420070365 patent/CN2720436Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345121A (en) * | 2014-09-13 | 2015-02-11 | 上海绿帝环保科技有限公司 | Detection powder for measuring total hardness of water |
| CN104345121B (en) * | 2014-09-13 | 2016-03-30 | 上海绿帝环保科技有限公司 | A kind of preparation method and using method thereof measuring the detection powder of determining total hardness of water |
| CN106404767A (en) * | 2016-08-30 | 2017-02-15 | 孙逊 | Cotton swab for fast determining whether total hardness of water reaches standard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |