CN102519959A - 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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- CN102519959A CN102519959A CN2011104206480A CN201110420648A CN102519959A CN 102519959 A CN102519959 A CN 102519959A CN 2011104206480 A CN2011104206480 A CN 2011104206480A CN 201110420648 A CN201110420648 A CN 201110420648A CN 102519959 A CN102519959 A CN 102519959A
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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 the 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 one type of paper impregnated with chemicals, that can pass through some material existence in its change color detecting liquid or the gas.
The 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 is soft; Absorptive character are good, and the water logging bubble does not expand, and does not break; Be as raw material with cotton pulp or bleached refined sulfate wood pulp; Through fast beating, squeeze to manufacture paper with pulp under the power in low pressure on the fourdrinier machine and form, body paper is promptly processed the test paper of different purposes after different chemical agent dippings, drying.
The dried paper slip that soaked with indicator or reagent can be in order to the existence of Acidity of Aikalinity with certain compound, atom, the ion of test solution, like 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, the toxic effect health of operators of paint, solvent.Owing to adopt artificial serigraphy, it is poor that human factor makes with batch look version reproducibility, and color and luster is difficult to evenly, and the color and luster accuracy is affected.The color lump stability and the accuracy of test paper color development bar are also relatively poor.
In view of this, those skilled in the art just is being devoted to develop highly sensitive pH test paper.
Summary of the invention
Task of the present invention provides a kind of highly sensitive pH test paper and preparation method thereof; It has solved the existing in prior technology problem; The pH body paper that the colour developing strip adoption of pH test paper is special through dipping specical regent liquid refining processing behind the hot blast freeze-day with constant temperature again, reaches pH value 6～7.5 with the adjustment of specical regent liquid; Guarantee that the caustic corrosion of pH body paper acid and alkali influences paper quality; Guarantee that the pH body paper can all evenly more firmly, stably adsorb specical regent liquid, the pH1-14 test paper that guarantees to be adsorbed specical regent liquid does not receive the influence of environment easily and go bad, lost efficacy, and this pH1-14 test paper is stablized, high sensitivity accurately thereby improved effectively; Easy to use succinct, practiced thrift resource.
Technical solution of the present invention is following:
A kind of highly sensitive pH test paper, it comprises detects with colour developing bar and standard colors version, and said colour developing strip adoption pH body paper is through dipping reagent solution, hot blast freeze-day with constant temperature again;
The reagent solution containing indicator, the indicator formulation contains: 80 g bromothymol blue, thymol blue 50 grams, 30 grams acidic metanil yellow, between 25 g methyl red, bromocresol green 5 g, 12 g nitrate yellow, cresol Fu phthalate 40 g, 3 g phenolphthalein, sodium salicylate on Nitrophenylazo 80 grams, 40 grams of titan yellow, fluorescent orange 2 g 4 - nitrobenzene even N - 1 - naphthol-3.6-bis 5% solution of sodium 1 g, was dissolved in a 30% by the ethanol solution 100 kg;
The buffer neutralizer that also contains water-based colouring stabilizer 100 grams, cotton wood fibre mildewproof agent 8 grams, specialties mildewproof agent 3 grams in the prescription of said indicator and form by 5 gram NaOH, 12.5 gram phosphoric acid modulation.
Said water-based colouring stabilizer is EG-40.
Said cotton wood fibre mildewproof agent is FMJO-56.
Said specialties mildewproof agent is LY10-A.
Said standard colors version adopts digital senior offset printing to print.
A kind of highly sensitive pH method for preparing test paper adopts aforesaid highly sensitive pH test paper, and it is 6～7.5 that said reagent solution adjustment is reached the pH value, and homogeneous immersion pH body paper passes through the hot blast freeze-day with constant temperature then again.
The present invention is owing to 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 behind the hot blast freeze-day with constant temperature again, and can become 80 colour developing bars through special tear line.
The adjustment of specical regent liquid is reached pH value 6～7.5; Guarantee that the caustic corrosion of pH body paper acid and alkali influences paper quality; Guarantee that the pH body paper can all evenly more firmly, stably adsorb specical regent liquid, the pH1-14 test paper that guarantees to be adsorbed specical regent liquid does not receive the influence of environment easily and go bad, lost efficacy, and this pH1-14 test paper is stablized, high sensitivity accurately thereby improved effectively; Easy to use succinct, practiced thrift 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 it is neat, attractive in appearance to set type, guarantee with batch the test paper steady quality.Abandon original artificial serigraphy and dry technology; Not only significantly reduce paint, the solvent toxicity influence healthy to operating personnel; And further reduce that look version reproducibility is poor, color and luster is inhomogeneous, the unsettled defective of color and luster accuracy because artificial manual operations brings, greatly improved the security and the environmental protection condition of workplace.
3, this high sensitivity pH1-14 test paper is used for WS 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, the pH test paper comprises to detect uses colour developing bar and standard colors version, and the strip adoption pH body paper that wherein develops the color is through dipping reagent solution, hot blast freeze-day with constant temperature again.
The refining processing cost volume of colour developing bar, but strip tear.For example one has 20, can become 80 colour developing bars through special tear line.
Chromogenic reagent strip impregnated with liquid indicator, the indicator formulation contains: 80 g bromothymol blue, thymol blue 50 grams, 30 grams acidic metanil yellow, between 25 g methyl red, methyl bromide phenol green 5 g, 12 g nitrate yellow, cresol Fu phthalate 40 g, 3 g phenolphthalein, sodium salicylate on Nitrophenylazo 80 grams, 40 grams of titan yellow, fluorescent orange 2 g 4 - nitro phenylazo - 1 - naphthol-3.6-bis 5% solution of sodium 1 g, was dissolved in a 30% by the ethanol solution 100 kg.
The buffer neutralizer that also contains water-based colouring stabilizer 100 grams, cotton wood fibre mildewproof agent 8 grams, specialties mildewproof agent 3 grams in the prescription of this indicator and form by 5 gram NaOH, 12.5 gram phosphoric acid modulation.The water-based colouring stabilizer is EG-40.Cotton wood fibre mildewproof agent is FMJO-56.The specialties mildewproof agent is LY10-A.
The 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 aforesaid highly sensitive pH test paper, and it is 6～7.5 that the reagent solution adjustment is reached the pH value, and the pH body paper that homogeneous immersion is special again is then through the hot blast freeze-day with constant temperature.
When using highly sensitive pH1-14 test paper of the present invention, required by the wide plasticity of Acidity of Aikalinity pH value of measuring the WS, select the corresponding proportion of specical regent liquid for use.
In sum, by a kind of highly sensitive pH test paper of the present invention and preparation method thereof, the pH body paper that the colour developing strip adoption of pH test paper is special; Through dipping specical regent liquid refining processing behind the hot blast freeze-day with constant temperature again; The adjustment of specical regent liquid is reached pH value 6～7.5, guarantee that the caustic corrosion of pH body paper acid and alkali influences paper quality, guarantees that the pH body paper can all evenly more firmly, stably adsorb specical regent liquid; The pH1-14 test paper that assurance is adsorbed specical regent liquid does not receive the influence of environment easily and goes bad, lost efficacy; Thereby improved stable, the accurate high sensitivity of this pH1-14 test paper effectively, easy to use succinct, practiced thrift resource.
Certainly; Those skilled in the art in the present technique field will be appreciated that; The foregoing description only is to be used for explaining the present invention; And be not with opposing qualification of the present invention, as long as in connotation scope of the present invention, all will drop in the scope of claim of the present invention the variation of the foregoing description, modification etc.
Claims (6)
1. highly sensitive pH test paper, it comprises detects with colour developing bar and standard colors version, it is characterized in that: said colour developing strip adoption pH body paper, through dipping reagent solution, hot blast freeze-day with constant temperature again;
The reagent solution containing indicator, the indicator formulation contains: 80 g bromothymol blue, thymol blue 50 grams, 30 grams acidic metanil yellow, between 25 g methyl red, bromocresol green 5 g, 12 g nitrate yellow, cresol Fu phthalate 40 g, 3 g phenolphthalein, sodium salicylate on Nitrophenylazo 80 grams, 40 grams of titan yellow, fluorescent orange 2 g 4 - nitrobenzene even N - 1 - naphthol-3.6-bis 5% solution of sodium 1 g, was dissolved in a 30% by the ethanol solution 100 kg;
The buffer neutralizer that also contains water-based colouring stabilizer 100 grams, cotton wood fibre mildewproof agent 8 grams, specialties mildewproof agent 3 grams in the prescription of said indicator and form by 5 gram NaOH, 12.5 gram phosphoric acid modulation.
2. highly sensitive pH test paper as claimed in claim 1 is characterized in that: said water-based colouring stabilizer is EG-40.
3. highly sensitive pH test paper as claimed in claim 1 is characterized in that: said cotton wood fibre mildewproof agent is FMJO-56.
4. highly sensitive pH test paper as claimed in claim 1 is characterized in that: said specialties mildewproof agent is LY10-A.
5. highly sensitive pH test paper as claimed in claim 1 is characterized in that: said standard colors version adopts digital senior offset printing to print.
6. a highly sensitive pH method for preparing test paper adopts highly sensitive pH test paper as claimed in claim 1, it is characterized in that: it is 6～7.5 that said reagent solution adjustment is reached the pH value, and homogeneous immersion pH body paper passes through the hot blast freeze-day with constant temperature then again.
Priority Applications (1)
| 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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| CN201110420648.0A CN102519959B (en) | 2011-12-15 | 2011-12-15 | Highly sensitive pH test paper and preparation method thereof |
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| CN102519959A true CN102519959A (en) | 2012-06-27 |
| CN102519959B CN102519959B (en) | 2014-05-07 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033504A (en) * | 2012-12-08 | 2013-04-10 | 杭州特种纸业有限公司 | Preparation method of universal pH test paper |
| CN103926241A (en) * | 2014-04-18 | 2014-07-16 | 深圳市宝凯仑科技有限公司 | Novel test paper strip as well as preparation and application thereof |
| CN106770268A (en) * | 2016-11-29 | 2017-05-31 | 上海三爱思试剂有限公司 | Preparation method without infiltration pH test paper |
| CN108204972A (en) * | 2013-10-08 | 2018-06-26 | 史密夫及内修公开有限公司 | PH indicator device and preparation |
| 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 |
| CN109540914A (en) * | 2018-12-04 | 2019-03-29 | 嘉宝莉化工集团股份有限公司 | A kind of paint film patience test indicator and the 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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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033504A (en) * | 2012-12-08 | 2013-04-10 | 杭州特种纸业有限公司 | Preparation method of universal pH test paper |
| 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 |
| CN108204972A (en) * | 2013-10-08 | 2018-06-26 | 史密夫及内修公开有限公司 | PH indicator device and preparation |
| CN103926241A (en) * | 2014-04-18 | 2014-07-16 | 深圳市宝凯仑科技有限公司 | Novel test paper strip as well as preparation and application thereof |
| CN106770268A (en) * | 2016-11-29 | 2017-05-31 | 上海三爱思试剂有限公司 | Preparation method without infiltration pH test paper |
| 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 |
| CN109540914A (en) * | 2018-12-04 | 2019-03-29 | 嘉宝莉化工集团股份有限公司 | A kind of paint film patience test indicator and the preparation method and application thereof |
| 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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|---|---|
| CN102519959B (en) | 2014-05-07 |
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