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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
98 products
Ebara Jitsugyo Co., Ltd.
160+ people viewing
Last viewed: 15 hours ago
This device is a reagent-free residual chlorine meter that uses a 3-electrode polarographic method to measure residual chlorine in water. ■Feature...
Yagyu Shokai Co., Ltd.
150+ people viewing
Last viewed: 17 hours ago
■Features Easy to operate with just two keys.
Yagyu Shokai Co., Ltd.
170+ people viewing
■Features -Uses a flat electrode that is easy to clean. ・Low-cost measurement is possible because no reagent is required during measurement (reage...
Yagyu Shokai Co., Ltd.
180+ people viewing
Last viewed: 18 hours ago
■Features In mV mode, it is possible to measure the electromotive force of chlorine ion electrodes and judge the quality of the electrodes.
Yagyu Shokai Co., Ltd.
170+ people viewing
Last viewed: 1 day ago
■Features -Can measure residual chlorine concentration in tap water. -Can be used to manage residual chlorine in cooking facilities, as a guide to ...
Yagyu Shokai Co., Ltd.
140+ people viewing
Last viewed: 1 day ago
■Features - All operations can be performed using three keys, and free chlorine and total chlorine can be measured by selecting reagents. ・Small a...
Yagyu Shokai Co., Ltd.
130+ people viewing
■Features - Easy-to-pour package design (beak opening design). ・The "warranty expiration date" is engraved on each package. - Aluminum bag with zi...
Yagyu Shokai Co., Ltd.
160+ people viewing
■Features - Capable of measuring free residual chlorine and total residual chlorine. - Comes with a memory function that can save and read out 150 ...
Yagyu Shokai Co., Ltd.
190+ people viewing
Last viewed: 1 day ago
■Features -Resolution is 0.01mg/L, so it can accurately read down to low concentrations. - Red LED display allows measurements even at night or in ...
Yagyu Shokai Co., Ltd.
150+ people viewing
■Features ・Measurement items other than general free chlorine are also available. - Comes with a memory function for 99 measured values. *Special ...
Yagyu Shokai Co., Ltd.
160+ people viewing
Last viewed: 1 day ago
■Features -Easy to operate with one button. - Large, easy-to-read display. *It is not waterproof.
Takumina Co., Ltd.
520+ people viewing
Last viewed: 10 minutes ago
Enables measurement of a wide range of water quality. Compatible with hot spring water and well water.
3 models listed
Takumina Co., Ltd.
300+ people viewing
Last viewed: 2 hours ago
Stable and continuous measurement of high-concentration residual chlorine (~200mg/L) for HACCP-compliant food factories. Features ■Stable and cont...
Takumina Co., Ltd.
270+ people viewing
Last viewed: 8 hours ago
Accurate measurement with one finger. Wide range of uses with 4 reagents. ■Accurate measurement of free chlorine and total chlorine concentration ...
Takumina Co., Ltd.
260+ people viewing
Last viewed: 13 hours ago
Accurate and easy residual chlorine measurement using the DPD method, which complies with clean water testing methods. ■Features ・Highly accurate...
Takumina Co., Ltd.
200+ people viewing
Easily measure residual chlorine and pH with Mobile Set 7. ■Both residual chlorine and pH can be measured Free residual chlorine is measured using...
Custom Co., Ltd.
450+ people viewing
■ Simultaneous display of free residual chlorine values and temperature. ・ IP67 dustproof, waterproof resistance. ・ The “auto lock function” th...
Custom Co., Ltd.
440+ people viewing
It is a product that measures the chlorine concentration that blends into the water. ■ Measurement of free residual chlorine and all residual chlo...
Ebara Jitsugyo Co., Ltd.
120+ people viewing
Last viewed: 3 hours ago
■Summary The physical sensor is a continuous measurement sensor that allows you to add items tailored to the site. By combining it with a control/d...
Hanna Instruments JAPAN
120+ people viewing
Last viewed: 1 day ago
■Latest spectrophotometer series HI 97101 is a portable digital residual chlorine analyzer. This instrument also allows numerical verification and ...
Hanna Instruments JAPAN
120+ people viewing
■Latest spectrophotometer series The HI 97725 is a portable digital residual chlorine meter that can measure low concentrations of free and total c...
Hanna Instruments JAPAN
120+ people viewing
Last viewed: 1 day ago
■Latest spectrophotometer series The HI 97745 is a portable digital residual chlorine meter that measures low concentrations of free and total chlo...
Hanna Instruments JAPAN
140+ people viewing
Last viewed: 9 hours ago
■Highly functional device that can measure turbidity and residual chlorine with just this one device Equipped with a state-of-the-art optical syste...
Hanna Instruments JAPAN
120+ people viewing
Last viewed: 20 hours ago
■Highly functional device that can measure turbidity and residual chlorine with just this one device Equipped with a state-of-the-art optical syste...
Hanna Instruments JAPAN
130+ people viewing
Last viewed: 1 day ago
■Measure turbidity and residual chlorine with just this one device Equipped with a state-of-the-art optical system and a tungsten light source base...
Hanna Instruments JAPAN
100+ people viewing
■Latest residual chlorine meter series The HI 97701 is a portable digital residual chlorine meter that measures low concentrations of free chlorine...
Takeya Brush Industry Co., Ltd.
140+ people viewing
This method is based on a reaction in which a DPD reagent is added to water containing residual chlorine, which produces a pale reddish-purple colo...
Hanna Instruments JAPAN
80+ people viewing
Last viewed: 12 hours ago
■Latest residual chlorine meter series The HI 97711 is a portable digital residual chlorine meter that measures low concentrations of free/total ch...
Hanna Instruments JAPAN
120+ people viewing
Last viewed: 19 hours ago
■Latest residual chlorine meter series The HI 97734 is a portable digital residual chlorine meter that can measure high concentrations of free chlo...
Hanna Instruments JAPAN
110+ people viewing
Last viewed: 1 day ago
■Latest spectrophotometer series HI 97761 and HI 97762 are portable digital residual chlorine meters for ultra-low concentrations. HI 97761 measure...
