CN102519959B - Highly sensitive pH test paper and preparation method thereof - Google Patents
Highly sensitive pH test paper and preparation method thereof Download PDFInfo
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- CN102519959B CN102519959B CN201110420648.0A CN201110420648A CN102519959B CN 102519959 B CN102519959 B CN 102519959B CN 201110420648 A CN201110420648 A CN 201110420648A CN 102519959 B CN102519959 B CN 102519959B
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Abstract
The invention relates to a piece of highly sensitive pH test paper and a preparation method thereof, wherein a developing strip is in the form of a piece of pH body paper, which is dipped in a reagent solution and then dried by hot air at constant temperature; the reagent solution contains an indicator; the formula of the indicator contains bromothymol blue, thymol blue, metanil yellow, m-methyl red, bromocresol green, nitrazine yellow, cresol red, phenolphthalein, para-nitrophenylazosalicylate sodium, titan yellow, fluorescent pigment orange red, 5% 4-nitrobenzenediazo-1-naphthol-3.6-sodium disulfonate solution and 30% dissolved ethanol aqueous solution; and the formula of the indicator further contains an aqueous colour fixing agent, a cotton wooden fibre mildew preventive, a special paper mildew preventive and a buffer neutralizer formed by modulating sodium hydroxide and phosphoric acid. The preparation method comprises the following steps of: adjusting the reagent solution till a pH value is up to 6-7.5, uniformly wetting the pH body paper, and drying through hot air at constant temperature. According to the invention, the reagent solution can be adjusted, so that the pH value is up to 6-7.5; steady and precise high sensitivity of the pH1-14 test paper is effectively increased; and the test paper is convenient and simple to use.
Description
Technical field
The present invention relates to pH test paper, particularly a kind of highly sensitive pH1-14 test paper and preparation method thereof.
Background technology
In chemical field, the utilization of test paper is extremely frequent, and it is a class paper impregnated with chemicals, that can pass through Cucumber existence in its change color detecting liquid or gas.
PH test paper floods with multiple acid base indicator, is used for checking the acid or alkaline of material, or the approximate pH value of solution to be measured.With the test paper of potassium iodide dipping, in order to check sulfide.Its papery softness, absorptive character are good, water soaking does not expand, do not break, as raw material with cotton pulp or bleached refined sulfate wood pulp, through fast beating, on fourdrinier machine, under low squeeze pressure, to manufacture paper with pulp and form, body paper makes the test paper of different purposes after different chemical agents floods, is dried.
The dry paper slip soaking with indicator or reagent, can be in order to the existence of the Acidity of Aikalinity of test solution and certain compound, atom, ion, as litmus paper, potassium iodide starch test paper, phenolphthalein test paper, wide model pH test paper, blood sugar test paper, temperature test paper etc.
The standard colors version of existing test paper adopts artificial serigraphy, and the toxic effect operating personnel's of paint, solvent is healthy.Owing to adopting artificial serigraphy, it is poor that human factor makes with batch look version reproducibility, and color and luster is difficult to evenly, and color and luster accuracy is affected.Color lump stability and the accuracy of test paper color development bar are also poor.
In view of this, those skilled in the art is just being devoted to develop highly sensitive pH test paper.
Summary of the invention
Task of the present invention is to provide a kind of highly sensitive pH test paper and preparation method thereof, it has solved the existing problem of prior art, the special pH body paper of colour developing strip adoption of pH test paper, through dipping specical regent liquid refining processing after hot blast freeze-day with constant temperature again, the adjustment of specical regent liquid is reached to pH value 6～7.5, guarantee that the caustic corrosion of pH body paper acid and alkali affects paper quality, guarantee that pH body paper can be all even more firm, stably adsorb specical regent liquid, the pH1-14 test paper that assurance is adsorbed specical regent liquid is not subject to easily the impact of environment and goes bad, lost efficacy, thereby it is stable effectively to have improved this pH1-14 test paper, accurate high sensitivity, easy to use succinct, saved resource.
Technical solution of the present invention is as follows:
A kind of highly sensitive pH test paper, it comprises detects by colour developing bar and standard colors version, described colour developing strip adoption pH body paper, through dipping reagent solution, then hot blast freeze-day with constant temperature;
Described reagent solution contains indicator, in the formula of described indicator, comprises: 80 grams of bromothymol blues, 50 grams of bromothymol blues, 30 grams of metanil yellows, 25 grams of m-methyl reds, 5 grams of bromcresol greens, 12 grams of nitro-nitrogen yellows, 40 grams of Lin Jia Fen Fu phthaleins, 3 grams, phenolphthalein, 80 grams of para-nitrophenylazosalicylate sodiums, 40 grams of titan yellows, orange red 2 grams of fluorescence, 1 gram of 4-nitrobenzoylazochromotropic acid-naphthols-3.6-sodium disulfonate 5% solution, through being dissolved in 100 kilograms of 30% ethanol waters;
In the formula of described indicator, also contain 100 grams, water-based colouring stabilizer, 8 grams of cotton wood fibre mildewproof agents, 3 grams of specialties mildewproof agents and modulate by 5 grams of NaOH, 12.5 grams of phosphoric acid the buffer neutralizer forming.
Described water-based colouring stabilizer is EG-40.
Described cotton wood fibre mildewproof agent is FMJO-56.
Described specialties mildewproof agent is LY10-A.
Described standard colors version adopts digital senior offset printing to print.
A kind of highly sensitive pH method for preparing test paper, adopts highly sensitive pH test paper as above, and it is 6～7.5 that described reagent solution adjustment is reached to pH value, then homogeneous immersion pH body paper, then by hot blast freeze-day with constant temperature.
The present invention is owing to having adopted above technical scheme, and compared with prior art, highly sensitive pH test paper of the present invention and preparation method thereof has the following advantages:
1, the special pH body paper of the colour developing strip adoption of pH test paper, is processed into one and has 20 through dipping specical regent liquid is refining after hot blast freeze-day with constant temperature again, and can become 80 colour developing bars by special tear line.
The adjustment of specical regent liquid is reached to pH value 6～7.5, guarantee that the caustic corrosion of pH body paper acid and alkali affects paper quality, guarantee all even specical regent liquid that more firmly, stably adsorbs of pH body paper, the pH1-14 test paper that assurance is adsorbed specical regent liquid is not subject to easily the impact of environment and goes bad, lost efficacy, thereby effectively improved stable, the accurate high sensitivity of this pH1-14 test paper, easy to use succinct, saved resource.
2, the standard colors version of pH test paper adopts digital senior offset printing, and color and luster is even, and accuracy, reproducibility are good, and typesetting is neat, attractive in appearance, guarantee with batch test paper steady quality.Abandon original artificial serigraphy and dry technique, not only greatly reduce paint, the solvent toxicity impact healthy on operating personnel, and further reduce that look version reproducibility is poor, color and luster is inhomogeneous, the unsettled defect of color and luster accuracy because artificial manual operations brings, greatly improved security and the environmental protection condition of workplace.
3, this high sensitivity pH1-14 test paper, for aqueous solution acidity, neutrality and alkaline mensuration, can be widely used in scientific research, environmental protection, household chemicals, food security, medical science, health, medicine, military project, electronics, light industry, petrochemical complex, hard-core technology, green plants, agricultural, manufacturing industry, cosmetics and the every field relevant with mankind's activity.
Embodiment
The invention provides a kind of highly sensitive pH1-14 test paper, colour developing bar and standard colors version for pH test paper inclusion test, the strip adoption pH body paper that wherein develops the color, through dipping reagent solution, then hot blast freeze-day with constant temperature.
The refining processing cost volume of colour developing bar, can tear by strip.For example one has 20, can become 80 colour developing bars by special tear line.
The reagent solution of colour developing bar dipping contains indicator, comprises: 80 grams of bromothymol blues, 50 grams of bromothymol blues in the formula of this indicator, 30 grams of metanil yellows, 25 grams of m-methyl reds, 5 grams of bromcresol greens, 12 grams of nitro-nitrogen yellows, 40 grams of Lin Jia Fen Fu phthaleins, 3 grams, phenolphthalein, 80 grams of para-nitrophenylazosalicylate sodiums, 40 grams of titan yellows, orange red 2 grams of fluorescence, 1 gram of 4-nitrobenzoylazochromotropic acid-naphthols-3.6-sodium disulfonate 5% solution, through being dissolved in 100 kilograms of 30% ethanol waters.
In the formula of this indicator, also contain 100 grams, water-based colouring stabilizer, 8 grams of cotton wood fibre mildewproof agents, 3 grams of specialties mildewproof agents and modulate by 5 grams of NaOH, 12.5 grams of phosphoric acid the buffer neutralizer forming.Water-based colouring stabilizer is EG-40.Cotton wood fibre mildewproof agent is FMJO-56.Specialties mildewproof agent is LY10-A.
Standard colors version adopts digital senior offset printing to print.
The present invention also provides a kind of highly sensitive pH1-14 method for preparing test paper, adopts highly sensitive pH test paper as above, and it is 6～7.5 that reagent solution adjustment is reached to pH value, the more special pH body paper of homogeneous immersion, then by hot blast freeze-day with constant temperature.
While using highly sensitive pH1-14 test paper of the present invention, by measuring, the wide plasticity of Acidity of Aikalinity pH value of aqueous solution is required, selects the corresponding proportion of specical regent liquid.
In sum, by highly sensitive pH test paper of one of the present invention and preparation method thereof, the special pH body paper of colour developing strip adoption of pH test paper, through dipping specical regent liquid refining processing after hot blast freeze-day with constant temperature again, the adjustment of specical regent liquid is reached to pH value 6～7.5, guarantee that the caustic corrosion of pH body paper acid and alkali affects paper quality, guarantee that pH body paper can be all even more firm, stably adsorb specical regent liquid, the pH1-14 test paper that assurance is adsorbed specical regent liquid is not subject to easily the impact of environment and goes bad, lost efficacy, thereby it is stable effectively to have improved this pH1-14 test paper, accurate high sensitivity, easy to use succinct, saved resource.
Certainly, those skilled in the art in the art will be appreciated that, above-described embodiment is only for the present invention is described, and not as limitation of the invention, as long as within the scope of connotation of the present invention, variation to above-described embodiment, modification etc. all will drop in the scope of the claims in the present invention.
Claims (2)
1. a highly sensitive pH test paper, it comprises detects by colour developing bar and standard colors version, it is characterized in that: described colour developing strip adoption pH body paper, through dipping reagent solution, then hot blast freeze-day with constant temperature;
Described reagent solution contains indicator, in the formula of described indicator, comprises: 80 grams of bromothymol blues, 50 grams of bromothymol blues, 30 grams of metanil yellows, 25 grams of m-methyl reds, 5 grams of bromcresol greens, 12 grams of nitro-nitrogen yellows, 40 grams of Lin Jia Fen Fu phthaleins, 3 grams, phenolphthalein, 80 grams of para-nitrophenylazosalicylate sodiums, 40 grams of titan yellows, orange red 2 grams of fluorescence, 1 gram of 4-nitrobenzoylazochromotropic acid-naphthols-3.6-sodium disulfonate 5% solution, through being dissolved in 100 kilograms of 30% ethanol waters;
In the formula of described indicator, also contain 100 grams, water-based colouring stabilizer, 8 grams of cotton wood fibre mildewproof agents, 3 grams of LY10-A specialties mildewproof agents and modulate by 5 grams of NaOH, 12.5 grams of phosphoric acid the buffer neutralizer forming;
Described pH test paper is in preparation process, and it is 6～7.5 that described reagent solution adjustment is reached to pH value, then homogeneous immersion pH body paper, then by hot blast freeze-day with constant temperature.
2. highly sensitive pH test paper as claimed in claim 1, is characterized in that: described water-based colouring stabilizer is EG-40.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110420648.0A CN102519959B (en) | 2011-12-15 | 2011-12-15 | Highly sensitive pH test paper and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110420648.0A CN102519959B (en) | 2011-12-15 | 2011-12-15 | Highly sensitive pH test paper and preparation method thereof |
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| CN102519959A CN102519959A (en) | 2012-06-27 |
| CN102519959B true CN102519959B (en) | 2014-05-07 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033504B (en) * | 2012-12-08 | 2014-10-29 | 杭州特种纸业有限公司 | Preparation method of universal pH test paper |
| GB201317746D0 (en) * | 2013-10-08 | 2013-11-20 | Smith & Nephew | PH indicator |
| CN103926241B (en) * | 2014-04-18 | 2016-08-17 | 深圳市宝凯仑科技有限公司 | A kind of novel test strip and preparation and application thereof |
| CN106770268B (en) * | 2016-11-29 | 2020-12-22 | 上海三爱思试剂有限公司 | Preparation method of non-permeation pH test paper |
| CN108593640A (en) * | 2018-04-19 | 2018-09-28 | 长春万成生物电子工程有限公司 | A kind of Test paper of water quality total alkalinity and preparation method thereof and detection method |
| CN109540914B (en) * | 2018-12-04 | 2021-04-16 | 嘉宝莉化工集团股份有限公司 | Paint film tolerance test indicator and preparation method and application thereof |
| CN110583496A (en) * | 2019-09-06 | 2019-12-20 | 孙雨强 | Cat urine pH indicating material, pH indicating cat litter and preparation method thereof |
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| CN1501072A (en) * | 2002-11-19 | 2004-06-02 | 上海三爱思试剂有限公司 | Test paper for detecting solution PH value |
| CN101135648A (en) * | 2006-08-29 | 2008-03-05 | 上海三爱思试剂有限公司 | pH test paper capable of maintaining stabilization and method for preparing the same |
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| JP3208122B2 (en) * | 1998-12-09 | 2001-09-10 | 核燃料サイクル開発機構 | Molded body for measuring pH of pore water in soil and pH measuring method using the same |
| JP3351518B2 (en) * | 2000-10-10 | 2002-11-25 | 健次 中島 | pH test stick that significantly delays drying of pH test paper |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1501072A (en) * | 2002-11-19 | 2004-06-02 | 上海三爱思试剂有限公司 | Test paper for detecting solution PH value |
| CN101135648A (en) * | 2006-08-29 | 2008-03-05 | 上海三爱思试剂有限公司 | pH test paper capable of maintaining stabilization and method for preparing the same |
Non-Patent Citations (2)
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| JP特开2000-171456A 2000.06.23 |
| 未知.几种常见试纸的制作方法.《http://bbs.myboyan.com/read-htm-tid-109122.html》.2007, * |
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