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This section provides an overview for fluorometers as well as their applications and principles. Also, please take a look at the list of 11 fluorometer manufacturers and their company rankings. Here are the top-ranked fluorometer companies as of February, 2025: 1.LABGENE Scientific SA, 2.Panomex Inc., 3.HORIBA.
Table of Contents
Fluorometer is an instrument used to measure the transparency of water flowing through rivers, lakes, marshes, and sewage systems.
A sample is placed in a cylindrical glass container with a mark (marker plate) at the bottom, and the transparency is measured by the amount of water when the marker plate is visible. If the water transparency is high, the marker plate at the bottom can be seen even if the amount of water is high, but if the sample is not so small that it is turbid, the marker plate cannot be seen.
The amount of water is drained from the container until the sign plate is visible, and the amount of water at which the sign plate is clearly visible is read from the scale on the container.
Fluorometers are primarily used to measure the clarity of colored water. They measure sewage, rainwater, swimming pools, river water, lake water, and seawater. It is also useful in determining whether industrial wastewater meets standards and in determining the amount of suspended solids in the water.
When a sample contains a large amount of suspended solids, care must be taken because suspended solids may settle to the bottom and cover the bottom markings, which may interfere with the measurement. Also, transparency varies depending on the ambient brightness at the time of measurement. As a general rule, measurements should be taken in daylight.
The principle of transparency is to determine the thickness of water by varying the thickness of the water to be measured, so that the double crosses on the sign board can be recognized. By changing the amount of water in the colorimeter, the thickness of the water between the tester's eyes and the sign board is changed.
The brightness of the environment is important to correctly identify the double-cross on the marker plate. When evaluating water clarity with a Fluorometer, the ambient illumination should be maintained at 1,000 ± 500 lx. This brightness is the same as that of a window with no direct sunlight during a blue day.
The Fluorometer consists of a Colorimeter, a stand, an outlet, and a sign board.
The container in which the sample is placed is called the colorimeter tube. Colorimeter tubes are available in 30 cm, 50 cm, and 1 m lengths, but the 30 cm tube is the most common.
The stand is equipped with a colorimeter tube, sign board, etc., and has a handle. The bottom of the stand serves as a weight, making it difficult to tip over and allowing water to be collected as it is.
Of course, it is also possible to collect water in a bucket and pour it out, but it is important to pour it out without bubbles.
A rubber tube with a pinch cock or a siphon type can be used to gradually reduce the amount of water in the color comparison tube.
The sign board is a printed double-cross. If the water to be measured is turbid, the double-crosses on the signboard are dimly visible, but as the amount of water is reduced little by little, the double-crosses become visible.
At the amount of water where this sign is clearly visible, stop discharging water from the outlet and read the scale for the height of the water.
The most basic method of measuring fluorometers is by visual evaluation using a sign board, but digital fluorometers are also available. Digital Fluorometers are used in facilities such as water purification plants, water supply and sewage treatment plants, agricultural wastewater treatment plants, and industrial wastewater treatment plants.
Since there is a certain relationship between turbidity and SS and transmissivity, it is possible to estimate turbidity and SS in an applied manner by measuring transmissivity. A handy probe type is also available, in which the detection unit is simply immersed in the sample water for measurement. The most common types use the transmitted light absorption spectrophotometry.
It is important to note that when comparing the results of visual Fluorometers and Digital Fluorometers on an unspecified number of samples, the measurements may not agree. This is due to the influence of the turbidity and hue of the sample water. On the other hand, the digital type has the advantage that there is little variation among the measurers. The disadvantage is that Digital Fluorometers are more expensive than visual Fluorometers.
The purpose of measuring transparency varies widely from situation to situation. Examples include the evaluation of river water quality, agricultural and industrial wastewater discharged from livestock farms, etc. The Water Pollution Control Law establishes standards for measuring the transparency of wastewater for the purpose of measurement.
When testing wastewater from factories, the Japanese Industrial Standard (JIS-K0102) standardizes the use of a Fluorometer with a height of 30 cm. The permeability is not applicable to drinking water.
Fluorometers with a height of 30 cm are used to evaluate the degree of fluorometer reading from 1 to 30 degrees. If the transparency is 30 degrees or higher, it can be judged so that there is no abnormality in the factory wastewater at the site level.
However, the standards and values that must be met vary depending on the situation, and items other than transparency must also be met. For river water, the height of the Fluorometer used depends on the situation.
*Including some distributors, etc.
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Walchem, Iwaki America, Inc., expanded and incorporated in 2013 with headquarters in the USA, is a manufacturer of online analytical instruments and electronic metering pumps used for wastewater systems in swimming pools and spas. The company's tangible product line includes treatment controllers to monitor and regulate various aspects of water treatment processes and water treatment sensors and accessories used to detect chemicals and impurities in water bodies. It also provides cloud-based software tools and instrumentation that integrate with its products. The company offers its know-how to assist clients with customized and full-scope chemical control systems.
Thermo Fisher Scientific Inc., founded in 1956 and headquartered in Waltham, Massachusetts, is a manufacturer and supplier of life science solutions, analytical instruments, specialty diagnostics, laboratory products, and biopharma services. Through its brand names, including Invitrogen, Fisher Scientific, Patheon, Applied Biosystems, and Gibco, among others, the company provides a wide range of products, which include chromatography systems, thermal cyclers, automated cell counters, fermenters, and DNA polymerases. The company’s annual revenue is over 40 billion USD, and it serves several fields, including customers working in clinical diagnostic labs, research institutions, hospitals, government agencies, and pharmaceutical/biotech companies.
StellarNet, Inc. is an American miniature spectrometer system products manufacturer and supplier that was established in Tampa, Florida, in 1991. The company’s product lineup includes portable and compact fiber optic spectrometers for near-infrared (NIR), visible (VIS), and UV measurements. It also offers various specialized light sources such as deuterium, tungsten halogen, and mercury argon. The company’s products are commonly used in academic and research institutions, as well as in the medical industry.
Electronics India, based in Punjab, India, is a manufacturer in the Indian electronics industry, was established in 1967. The company specializes in the production of scientific and laboratory equipment. Its products are used in various sectors including healthcare, pharmaceuticals, educational institutions, research & development, and industrial quality control. It is supported by technological advanced infrastructure, which is well equipped with state-of-the-art machineries. With an effective distribution and support network, it has expanded and exports its products to countries like Nepal, Pakistan, Nigeria, Syria, Brazil, USA and more, demonstrating its global reach and influence.
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.
Turner Designs Hydrocarbon Instruments, located in Fresno, California, is a manufacturer of laboratory and field portable instruments for measurement and monitoring of hydrocarbons in water and soil. The company's measuring instruments includes oil in water analyzers, holders, alarms, monitors and hydrocarbon analyzers, used in several industries such as water treatment, oil and gas, power generation and environmental. These products are employed for accurate analysis and monitoring of oil content in water, enabling effective pollution control and water quality management in industrial and environmental applications.
Multi Measuring Instruments Co., Ltd. was founded in Chiba, Japan in 1986 and is headquartered in Tokyo. As per its namesake, Multi offers a vast array of measuring and testing equipment used across a number of industries. Some of their offerings include voltage meters, network testers, lux meters, cable locators, sound meters, various thermometers, gas analyzers, and water quality meters. Multi Measuring Instruments has a mission for its products to improve the global environment by detecting inefficiencies and leaks, developing products that will be useful for solar and wind power generation.
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.
Panomex Inc., an established manufacturing company based in India with more than 15 years of experience, specializes in a wide range of industrial and scientific instruments. Their product portfolio includes digital moisture meters, gas detectors, ultrasonic thickness gauges, and more. The company also continues to deliver advanced solutions to a wide range industries, and owns manufacturing unit equipping with research and development lab, with an engineering team with sound experience in meteorology. They offer products to both Indian market and export to overseas mainly in Asia, Africa and Middle East countries.
Labgene Scientific, a company in Châtel-Saint-Denis, Switzerland, is a distributor of reagents and consumables for molecular biology laboratories, facilities and platforms founded in 2008. The company provides integrated solutions for life science research, diagnostic laboratories, public hospitals, forensics, and government laboratories. Its products portfolio includes PCR kits, serology, separation for DNA or RNA, cell culture instruments, and chambers. These products are supplied by Atrandi, Benchmark Scientific, Bertin, Bertin, and other suppliers.
Ranking as of February 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | LABGENE Scientific SA |
19.1%
|
| 2 | Panomex Inc. |
14.6%
|
| 3 | HORIBA |
14.6%
|
| 4 | StellarNet, Inc. |
9.0%
|
| 5 | Electronics India |
7.9%
|
| 6 | Walchem |
7.9%
|
| 7 | SIBATA SCIENTIFIC TECHNOLOGY LTD |
7.9%
|
| 8 | Thermo Fisher Scientific Inc. |
6.7%
|
| 9 | MULTI MEASURING INSTRUMENTS Co., Ltd. |
6.7%
|
| 10 | Turner Designs |
3.4%
|
Derivation Method
The ranking is calculated based on the click share within the fluorometer page as of February 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.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
3 | 33.3% |
|
Japan
|
3 | 33.3% |
|
India
|
2 | 22.2% |
|
Switzerland
|
1 | 11.1% |
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