Purpose：Mainly used for testing the acidity and alkalinity of solutions. By comparing the color changes of the test paper with the standard color chart, the acidity and alkalinity of the solution can be determined. It is low-cost and easy to operate, and is commonly used for pH detection in various industries.

Classification of pH test strips：According to the indicated range and accuracy, it is divided into wide range test strips and precision test strips. The division of Guangfan test paper is usually 1 pH, with a wide indication range but wide applicability. Precision test strips typically have a pH range of 0.2-0.5, indicating accuracy but with a slightly narrow applicable pH range.

Common pH wide test paper specifications include：pH 1-14、pH 4-10、pH 1-12、pH 9-14、pH 1-10、pH 0-14、pH1-4

Purpose：Special test strips are used to detect test strips other than acid and alkali, such as lead acetate test strips for detecting trace amounts of hydrogen sulfide, potassium iodide starch test strips for measuring strong oxidants, silver test strips for detecting silver ion content in solutions, turmeric test strips for measuring boric acid and borate, water hardness and alkalinity test strips, and cobalt chloride test strips for measuring moisture content. It also includes Congo red test paper, litmus test paper, phenolphthalein test paper, etc. used for qualitative detection of acidity and alkalinity.

Swimming pool water quality testing paper is mainly used to detect indicators such as pH, hardness, free chlorine, and total chlorine in swimming pool and SPA water. It is particularly suitable for water quality testing in household swimming pools and fish tanks.

In order to ensure the safety of users and reduce environmental pollution, our company has developed environmentally friendly and non-toxic silver test strips, which avoid the carcinogenic cadmium salts and sodium sulfide contained in traditional silver test strips.

Common pH precision test paper specifications include：pH 0.5-5.0、pH 1.4-3.0、pH 2.7-4.7、pH 3.8-5.4、pH 5.2-7.4、pH 5.4-7.0、pH 5.5-9.0、pH 6.0-7.5、pH 6.4-8.0、pH 6.9-8.4、pH 7.6-8.5、pH 8.2-10.0、pH 8.9-10.0、pH 9.5-13.0、pH 12.0-14.0

- Red Stone Core Test Paper

- Blue litmus test paper

- Neutral litmus test paper

- Congo Red Test Paper

- Phenolphthalein test paper

- Lead acetate test paper

- Curcumin test paper

- Potassium iodide starch test paper

- Silver test paper

- Total hardness test paper

- Cobalt chloride test paper

- Swimming pool water quality test paper

- Chlorine test paper 50-2000PPM

- Effective chlorine test paper 10-250PPM

- Residual chlorine test paper 0-25PPM

- Chlorine dioxide test paper

- Dibromohydrin test paper

Most disinfectants should adjust the ratio of disinfectant preparation according to different usage scenarios and changes in effective ingredients in order to achieve the required concentration for killing pathogenic microorganisms and ensure disinfection effectiveness. Especially chlorine containing disinfectants have unstable properties and are prone to losing their active ingredients during storage and use. However, conventional testing methods require professional laboratories and personnel, making it difficult for users to control them on site.

The chlorine test paper series produced by SanAiSi is mainly used for measuring the effective chlorine content in disinfectant and the residual effective chlorine content after disinfection. It can conveniently and intuitively measure whether the concentration of disinfectant is within a reasonable range, suitable for diluting disinfectant preparation and verifying concentration before use. The detection range of chlorine test paper covers 0-2000mg/L and can be used to detect the concentration of chlorine containing disinfectants and residual chlorine in wastewater for various purposes.

The main specifications of the chlorine test paper series are divided into three categories based on the measured concentration: chlorine test paper (50-200mg/L), effective chlorine test paper (10-250mg/L), and residual chlorine test paper (0-25mg/L).

How to choose a suitable chlorine test paper

Firstly, it is necessary to choose a manufacturer with a hygiene license for disinfection product production enterprises in order to ensure product quality and accuracy of testing! SanAiSi has obtained the Shanghai Disinfection Product Production Enterprise Hygiene License since 2008.

Select different disinfectant concentration appropriate test strips according to the usage situation.

New disinfectant concentration test paper

SSS has developed a chlorine dioxide concentration test strip based on the development trend of disinfectants. In response to the special oxidizing properties of chlorine dioxide, it can directly measure the chlorine dioxide content in the solution, which meets the requirements of GB/T 26366-2021.

In addition, there is a concentration test paper containing bromine disinfectant dibromohydrin.

SanAiSi produces a variety of chemical analysis indicators and conventional reagents, such as curing agents, pigment indicators, fluorides, CS riot agents, etc.

Please refer to the product catalog for details: