CN204203104U - A kind of free mineral acid detection test paper - Google Patents
A kind of free mineral acid detection test paper Download PDFInfo
- Publication number
- CN204203104U CN204203104U CN201420674645.9U CN201420674645U CN204203104U CN 204203104 U CN204203104 U CN 204203104U CN 201420674645 U CN201420674645 U CN 201420674645U CN 204203104 U CN204203104 U CN 204203104U
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- test paper
- paper
- mineral acid
- free mineral
- circular hole
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model discloses a kind of free mineral acid detection test paper, comprise test paper body, test paper body is divided into permeable topsheet, middle layer and antiseep bottom from the top down successively; Middle layer is made up of m-cresol purple particulate layer and extrusion coating paper; M-cresol purple particulate layer is coated in above extrusion coating paper, and the thickness of m-cresol purple particulate layer is 0.01mm ~ 0.05mm; Permeable topsheet is made up of multilayer Thief zone cotton like paper; Permeable topsheet is provided with micro-circular hole of multiple up/down perforation; Spacing between micro-circular hole is 0.1 μm ~ 0.3 μm; Antiseep bottom forms by as the sealed polyethylene plastic of base material and extrusion coating paper; The diameter of micro-circular hole is 0.15 μm ~ 0.35 μm.The utility model is when carrying out free mineral acid and detecting, and namely test paper puts i.e. variable color, and color changeable effect is obvious, observes directly perceived, is convenient to Site Detection; By improving the structure of Test paper, improve Detection results; And this test paper makes simple and convenient, with low cost, very convenient operation.
Description
Technical field
The utility model relates to a kind of detection test paper, particularly relates to a kind of free mineral acid detection test paper, belongs to light-coloured vinegar free mineral acid detection technique field.
Background technology
Light-coloured vinegar is as the one of daily condiment product, and each family can eat, and the light-coloured vinegar smell that market is sold and color are difficult to tell quality usually.
The processing mode of light-coloured vinegar is divided into zymotechnics and preparation method, the cost of zymotechnics is high, so the present increasing illegal producer commonly uses industrial glacial acetic acid to forge light-coloured vinegar, free mineral acid is wherein its important indicator, GB 2719-2003 light-coloured vinegar hygienic standard clear stipulaties must not detect, the free mineral acid method of inspection is generally all carried out according to GB/T5009,41-2003, and the test paper used in inspection has methyl violet paper and hundred li of blue test paper of careless phenol; But by the detection to free mineral acid in food Supervisory Testing Process, find still capable defects of test paper that the GB light-coloured vinegar free mineral acid method of inspection uses, namely cost is high, use is inconvenient, Detection results is poor, false positive rate is high.
Utility model content
In order to the weak point in solving the problem, the utility model provides a kind of free mineral acid detection test paper.
For solving above technical matters, the technical solution adopted in the utility model is: a kind of free mineral acid detection test paper, comprises test paper body, and test paper body is divided into permeable topsheet, middle layer and antiseep bottom from the top down successively;
Middle layer is made up of m-cresol purple particulate layer and extrusion coating paper; M-cresol purple particulate layer is coated in above extrusion coating paper, and the thickness of m-cresol purple particulate layer is 0.01mm ~ 0.05mm;
Permeable topsheet is made up of multilayer Thief zone cotton like paper; Permeable topsheet is provided with micro-circular hole of multiple up/down perforation; Spacing between micro-circular hole is 0.1 μm ~ 0.3 μm;
Antiseep bottom forms by as the sealed polyethylene plastic of base material and extrusion coating paper;
The diameter of micro-circular hole is 0.15 μm ~ 0.35 μm.
The utility model is when carrying out free mineral acid and detecting, and namely test paper puts i.e. variable color, and color changeable effect is obvious, observes directly perceived, is convenient to Site Detection; By improving the structure of Test paper, improve Detection results; And this test paper makes simple and convenient, with low cost, very convenient operation.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model;
In figure: 1, test paper body; 2, permeable topsheet; 3, middle layer; 4, antiseep bottom.
Embodiment
As shown in Figure 1, the utility model comprises test paper body 1, and test paper body 1 is divided into permeable topsheet 2, middle layer 3 and antiseep bottom 4 from the top down successively;
Middle layer 3 is made up of m-cresol purple particulate layer and extrusion coating paper; M-cresol purple particulate layer is coated in above extrusion coating paper, and the thickness of m-cresol purple particulate layer is 0.01mm ~ 0.05mm;
Permeable topsheet 2 is made up of multilayer Thief zone cotton like paper; Permeable topsheet 2 is provided with micro-circular hole of multiple up/down perforation; Spacing between micro-circular hole is 0.1 μm ~ 0.3 μm;
Antiseep bottom 4 forms by as the sealed polyethylene plastic of base material and extrusion coating paper;
The diameter of micro-circular hole is 0.15 μm ~ 0.35 μm.
The utility model is by improving the indicator of Test paper, and improve detectability, concrete grammar is as follows:
Index agent is prepared: be dissolved in 13.6ml0.02mol/l sodium hydroxide solution by 0.10 gram of m-cresol purple, with distilled water diluting to 250ml, be configured to m-cresol purple indicator.
Prepared by test paper: extrusion coating paper is cut into 5 cm x, 5 centimetres of squares, be soaked in above-mentioned m-cresol purple indicator, take out after soaking into and dry in clean ventilation, obtained m-cresol purple particulate layer 3 of the present utility model, in yellow, by test paper obtained after permeable topsheet 2, m-cresol purple particulate layer 3, antiseep bottom 4 split.
Detection method: be stained with a little light-coloured vinegar sample with glass bar, put on test paper, if test paper becomes rose pink to punctation, can be judged to the positive.
Application during a kind of reality that additionally provides the utility model detects, during the free mineral acid using the utility model to detect in light-coloured vinegar, hand-holdable or clamp one jiao, test paper with tweezers, a little light-coloured vinegar sample is stained with glass bar, put on the utility model test paper, if test paper becomes rose pink to punctation, can the positive be judged to.
Embodiment one: in factories light-coloured vinegar, free mineral acid detects
Extract certain factory to stock up raw material light-coloured vinegar, detect by above-mentioned detection method, result is negative; Use GB/T5009.41-2003 methyl violet paper method to verify, result is also negative.
Embodiment two: in factory's finished product light-coloured vinegar, free mineral acid detects
Extract certain factory's finished product light-coloured vinegar, detect by above-mentioned detection method, result is negative (on the left of form): use GB/T5009.41-2003 methyl violet paper method to verify, result is also negative.
Embodiment three: in finished product light-coloured vinegar, free mineral acid detects the mensuration of limitation
Detecting free mineral acid at 100 milliliters is add 50 milligrams of hydrochloric acid in the finished product light-coloured vinegar of feminine gender, and mixing, test by detection method, test paper is rose pink.(in the middle of form)
Detecting free mineral acid at 100 milliliters is add 100 milligrams of hydrochloric acid in the finished product light-coloured vinegar of feminine gender, and mixing, tests by detection method, test paper pinkiness.(the form right side then)
Add hydrochloric in the light-coloured vinegar that the utility model is negative at free mineral acid, obtained content of hydrochloric acid be respectively 0.5,1.0,1.5, the light-coloured vinegar solution that is positive of the free mineral acid of 2.0mg/ml, test paper discoloration is shown in form
The utility model is when carrying out free mineral acid and detecting, and namely test paper puts i.e. variable color, and color changeable effect is obvious, observes directly perceived, is convenient to Site Detection; By improving the structure of Test paper, improve Detection results; And this test paper makes simple and convenient, with low cost, very convenient operation.
Above-mentioned embodiment is not to restriction of the present utility model; the utility model is also not limited in above-mentioned citing; the change that those skilled in the art make within the scope of the technical solution of the utility model, remodeling, interpolation or replacement, also all belong to protection domain of the present utility model.
Claims (3)
1. a free mineral acid detection test paper, comprise test paper body (1), it is characterized in that: described test paper body (1) is divided into permeable topsheet (2), middle layer (3) and antiseep bottom (4) from the top down successively;
Described middle layer (3) is made up of m-cresol purple particulate layer and extrusion coating paper; Described m-cresol purple particulate layer is coated in above extrusion coating paper, and the thickness of m-cresol purple particulate layer is 0.01mm ~ 0.05mm;
Described permeable topsheet (2) is made up of multilayer Thief zone cotton like paper; Permeable topsheet (2) is provided with micro-circular hole of multiple up/down perforation; Spacing between described micro-circular hole is 0.1 μm ~ 0.3 μm.
2. free mineral acid detection test paper according to claim 1, is characterized in that: described antiseep bottom (4) forms by as the sealed polyethylene plastic of base material and extrusion coating paper.
3. free mineral acid detection test paper according to claim 1, is characterized in that: the diameter of described micro-circular hole is 0.15 μm ~ 0.35 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420674645.9U CN204203104U (en) | 2014-11-13 | 2014-11-13 | A kind of free mineral acid detection test paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420674645.9U CN204203104U (en) | 2014-11-13 | 2014-11-13 | A kind of free mineral acid detection test paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204203104U true CN204203104U (en) | 2015-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420674645.9U Expired - Fee Related CN204203104U (en) | 2014-11-13 | 2014-11-13 | A kind of free mineral acid detection test paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204203104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051431A (en) * | 2017-11-27 | 2018-05-18 | 深圳瑞达生物股份有限公司 | Thiol compound vitro detection reagent, preparation method and the compound test paper of detection |
-
2014
- 2014-11-13 CN CN201420674645.9U patent/CN204203104U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051431A (en) * | 2017-11-27 | 2018-05-18 | 深圳瑞达生物股份有限公司 | Thiol compound vitro detection reagent, preparation method and the compound test paper of detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20151113 |
|
| EXPY | Termination of patent right or utility model |