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This section provides an overview for residual chlorine meters as well as their applications and principles. Also, please take a look at the list of 10 residual chlorine meter manufacturers and their company rankings. Here are the top-ranked residual chlorine meter companies as of May, 2025: 1.HORIBA, 2.Qingdao Yongying Environmental Protection Technology Co., Ltd, 3.SNEW TRADING & SOLUTION SDN BHD.
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Categories Related to Residual Chlorine Meters
A residual (amperometric) chlorine meter is a device to measure the amount of free effective chlorine and bound effective chlorine such as chloramine that remains in water after treatment with chlorinated chemicals at water purification plants.
It measures the amount of chlorine remaining in the water after 30 minutes of application of chlorine contracting agents, which are used to prevent the spread of waterborne diseases, it is indicated in units of ppm.
Residual chlorine has strong disinfecting power, but is almost completely eliminated in the drainage pipe. When residual chlorine is present to some extent, its disinfection effect can be maintained.
However, when residual chlorine is present in excessive amounts, it has a strong chlorine odor and corrodes metals and other materials.
It is also a well-known cause of the formation of carcinogens,
Therefore, it must be accurately measured for water quality control, daily inspections, and maintenance.
Residual chlorine meters are mainly used in public facilities, such as buildings, apartment buildings, schools, hospitals, community centers, and food and beverage factories, cooking facilities, swimming pools, elevated water tanks, and other places where water quality control is required.
Examples of use are as follows:
There are three methods for measuring residual chlorine: the iodine titration method, the colorimetric DPD method, and the DPD absorbance spectrophotometric method, which uses reagents.
The polarograph method is a reagent-free method that measures conductivity by passing a weak electric current through a sensor using a precious metal electrode.
The iodometric titration method adds potassium iodide solution at a pH of 4 or less, after which the free and bound chlorine is replaced by iodine.
The reagent type method is used to measure total residual chlorine. The reagent form is used for process control in water purification plants.
The colorimetric DPD method and the DPD absorbance spectrophotometric method are:
*Including some distributors, etc.
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HORIBA RADIO LABORATORY was established in Japan in 1945 and has spent the last three-quarters of a century growing as an R&D company and engaged in international operations. HORIBA Scientific offers 200 years of experience developing high-performance scientific instruments and analytical solutions. The HORIBA Group of worldwide companies provides an extensive array of instruments and systems for applications ranging from automotive R&D, process and environmental monitoring, in-vitro medical diagnostics, semiconductor manufacturing, and metrology to a broad range of scientific R&D and QC measurements. Operating in Asia, Europe, and North and South America, HORIBA scientific develops solutions that go beyond just products.
Shanghai BOQU Instrument Co.,Ltd (SBI) is a Chinese manufacturer of water testing and analysis instruments that was established in 2007 in Pudong, Shanghai. The company produces various water sensors and quality analyzers, such as biochemical oxygen demand (BOD), chemical oxygen demand (COD), silica, and ammonia nitrogen (NH3-N) analyzers. It also offers a range of meters, including residual chlorine, total suspended solids (TSS) and dissolved oxygen meters. SBI products are mainly used by clients in the marine, life sciences, wastewater processing, and biotechnology sectors.
Hangzhou Lohand Biological Co.,Ltd., founded in 2008 with facilities in China, is a manufacturer of laboratory instruments and equipment. The company's products include water test paper, water test kits, color comparison tubes, and industrial online meters. Lohand’s products are used for rapid testing of water quality in water supply systems, food and beverage processing, environmental detection, and water treatment projects in agriculture, sewage plants, scientific research, biotechnology, and textile industries. Hangzhou Lohand Biological Co.,Ltd. also provides custom design and production of equipment and systems to meet client requirements.
Headquartered in Shandong, China, Shandong Renke Control Technology Co., Ltd. is an Original Equipment Manufacturer (OEM) specializing in environmental monitoring technology. Renke has developed a cloud platform that analyzes data collected from diverse environmental sources, including water quality and warehouse security. This platform enables the company to offer a wide range of applications and data-driven solutions across multiple industries. Renke also provides technical support, including field installation, sensor calibration, and automatic control. The company has achieved, among others, the ISO 9001 certification and product certification from the National Institute of Metrology.
Oxidation Technologies, LLC., established in 2014 and headquartered in Inwood, Iowa, USA, is a manufacturer specializing in ozone systems, ozone generators, and associated ozone-related accessories. The company specializes as a system integrator in utilizing ozone for oxidation purposes, offering integrated ozone systems along with H2O2 or UV systems to deliver Advanced Oxidation Process (AOP) Solutions. The company provides engineering services, consulting, and basic guidance on the application of ozone. It also offers services for maintenance, repairs, and servicing of these systems.
Sibata Scientific Technology Ltd, founded in 1921 at Saitama, Japan is a manufacturer of environmental measurement and occupational health measurement equipment. The company with global clientele produces various scientific measurement and analysis equipment that can range from lab glassware to synthetic reactors. The products line comprise of general lab equipment, extractor, synthetic reactor, Rotary Evaporator and Glass tube oven. These products are used in applications such as occupational safety, food hygiene, water hygiene, hospital and chemical plants as well. The products are ideal for testing quality, measuring dust, precise heating & cooling, personal exposure measurements and many more with more reliability.
Analyticon Instruments Corporation is a distributor of process monitors, laboratory meters, and analytical instruments located in Springfield, New Jersey. Established in 1988, the company primarily stocks products from Japanese manufacturer DKK-TOA Corporation, which are distributed exclusively through the Analyticon brand. The company offers a wide range of instruments including automatic titrators, conductivity meters, and pH/ORP transmitters for use in the petroleum, water and wastewater, semiconductors, pharmaceuticals, and electronics industries. Analyticon Instruments Corporation also provides OEM manufacturing services for international partner companies and minor suppliers.
Supmea Automation Co. Ltd., founded in 2006 and based in Zhejiang, China, is a manufacturer and supplier of industrial process automation sensors and instruments. Its products include analysis instruments, recorders, pressure transmitters, flowmeters, and other field instruments, serving industries across over 100 countries. Its products are ISO 9001-compliant, and in 2022, its Supmea ULS-B Split Type Ultrasonic Level Transmitter received the Editor's Choice Award at the Control Engineering China Product Awards.
Ranking as of May 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | HORIBA |
20.0%
|
| 2 | Qingdao Yongying Environmental Protection Technology Co., Ltd |
10.0%
|
| 3 | SNEW TRADING & SOLUTION SDN BHD |
10.0%
|
| 4 | Supmea Automation Co.,Ltd |
10.0%
|
| 5 | Zhejiang Lohand Environment Technology Co.,Ltd. |
10.0%
|
| 6 | Shanghai BOQU Instrument Co.,Ltd |
10.0%
|
| 7 | Analyticon |
10.0%
|
| 8 | Shandong Renke Control Technology Co.,Ltd. |
10.0%
|
| 9 | SIBATA SCIENTIFIC TECHNOLOGY LTD |
10.0%
|
Derivation Method
The ranking is calculated based on the click share within the residual chlorine meter page as of May 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
China
|
3 | 50.0% |
|
Japan
|
2 | 33.3% |
|
Malaysia
|
1 | 16.7% |
98 products found - Page 2
98 products - Page 2
Hanna Instruments JAPAN
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■Latest residual chlorine meter series The HI 97771 is a portable digital residual chlorine meter that measures ultra-high total chlorine and low-l...
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Portable residual chlorine meter RC-31P-F for water sampling and injection measurement ■Features - Easy measurement of residual chlorine in tap wa...
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■Zia Checker also useful for measuring hypochlorous acid water Zia Checker is a digital spectrophotometer that bridges the gap between simple reage...
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■Latest spectrophotometer series The HI 97710 is a portable digital residual chlorine meter that can measure low concentrations of free and total c...
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■Features ・For measuring residual chlorine in tap water, swimming pools, etc. ・With standard solution (free 1mg/L, total chlorine 1mg/L, 0 adjust...
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