Daily test paper and its preparation method

A test paper, a daily-use technology, is applied in the direction of analyzing materials through chemical reactions, and analyzing materials through observation of the influence of chemical indicators. It can solve problems such as limitations in use and achieve accurate measurement of the effect of use.

Inactive Publication Date: 2012-07-18
上海馨晟试化工科技有限公司
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AI Technical Summary

Problems solved by technology

[0004] The task of the present invention is to provide a daily-use test paper and its preparation method, which solves the problem that the existing pH test paper has only two specifications of wide-range test paper and precision test paper, and there are limitations in use.

Method used

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Embodiment Construction

[0020] The invention provides a test paper for daily use. The test paper comprises a color-developing strip for detection and a standard color plate, wherein the color-developing strip is made of pH base paper, dipped in a reagent solution, and then dried with hot air at a constant temperature.

[0021] The reagent solution impregnated with the chromogenic strip contains an indicator, and the formula of the indicator includes: 100 grams of water-based color fixing agent, 8 grams of cotton wood fiber antifungal agent, 3 grams of special paper antifungal agent, and 5 grams of hydrogen oxide Sodium and 12.5 grams of phosphoric acid are prepared as a buffer neutralizer, which is dissolved in 100 kilograms of 30% ethanol aqueous solution.

[0022] The reagent solution also contains a special-effect sensitive reagent, and the formula of the special-effect sensitive reagent includes: 20 grams of ethyl red, 50 grams of bromocresol green, and 200 grams of bromothymol blue. The water-ba...

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Abstract

The present invention relates to a daily test paper, comprising a coloration bar for detection and a standard color plate, wherein the coloration bar uses pH base paper, the pH base paper is soaked in a reagent solution and then dried at constant temperature by hot wind. The reagent solution contains an indicator. The formula of the indicator comprises: aqueous coloring stabilizer 100 grams, cotton wood fiber anti-fungus agent 8 grams, anti-fungus agent for special paper 3 grams and buffer neutralizer prepared by sodium hydroxide 5 grams and phosphoric acid 12.5 grams, and the above components are dissolved in 30% aqueous ethanol solution 100 kg. The reagent solution also contains a sensitive reagent and the formula of the sensitive reagent comprises: ethyl red 20 grams, bromocresol green 50 grams, and bromthymol blue 200 grams. According to the preparation method provided by the invention, the pH value of the reagent solution is adjusted to 5.5-8, and the pH base paper is uniformly soaked and then dried at constant temperature by hot wind. The daily test paper effectively and clearly tests the weak acid, weak base and neutral pH value areas. The daily test paper can be used for relatively idea, convenient, practical and accurate tests.

Description

technical field [0001] The invention relates to pH test paper, in particular to a daily pH test paper product and a preparation method thereof. Background technique [0002] Existing pH test paper has two specifications: wide-range test paper and precision test paper. In the process of meeting the increasing needs of modern people for more and more convenient and accurate determination of pH values ​​in weak acids, weak bases and neutral regions, there are limitations in their use. , such as body fluids for human health, food inspection, food processing, beauty makeup, aquaculture, planting, planting, drinking water quality, environmental protection, the use of additives for high-end precision instruments, etc., are inseparable from the weak acid and weak base And neutral pH detection and adjustment. [0003] In order to adapt to the development of the times, it is necessary to develop a daily test paper product that can solve the problem of accurate determination of weak a...

Claims

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Application Information

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IPC IPC(8): G01N21/80
Inventor 陈伟勇
Owner 上海馨晟试化工科技有限公司
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