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This section provides an overview for densimeters as well as their applications and principles. Also, please take a look at the list of 30 densimeter manufacturers and their company rankings. Here are the top-ranked densimeter companies as of April, 2025: 1.NextGen Material Testing, Inc., 2.AMETEK Measurement & Calibration Technologies Division, 3.Microtrac MRB.
Table of Contents
Okayama University Graduate School, Ph.D. (Agriculture). After working as a specially appointed Assistant Professor at Tokyo Medical and Dental University, a fluid researcher at the Okayama Prefectural Institute of Biological Sciences, and a special researcher (JSPS PD) at the Japan Society for the Promotion of Japan Science, he became independent as a freelancer.
Specializes in natural product chemistry, protein engineering, fermentation engineering, and instrumental analysis of chemicals (especially mass spectrometry chemistry).
Thesis: https://pubmed.ncbi.nlm.nih.gov/?term=HIROKAZU+USUKI
linkedin: https://www.linkedin.com/in/%E5%8D%9A%E4%B8%80-%E8%87%BC%E6%9C%A8-b83827228/
Specific gravity refers to the ratio of the mass of a particular substance to the mass of an equivalent volume of a standard substance.
A densimeter, also known as a specific gravity meter, is a device used to measure this specific gravity. While the term specific gravity applies to solids, liquids, and gases, this article focuses on densimeters used for measuring the specific gravity of liquids.
In simple terms, the principle involves measuring the buoyancy force acting on an object. If the specific gravity of water is considered as 1, an object will sink if its specific gravity is greater than 1 and float if it's less. The most common device that operates based on this principle is the hydrometer.
A hydrometer is a calibrated scale that floats in a liquid, and the specific gravity is determined by reading the scale.
Modern densimeters have evolved to include various types such as load cell-based, vibration-based, differential pressure-based, and radiation-based models. Some of these newer models feature digital displays, simplifying the measurement process compared to traditional hydrometers.
Densimeters find applications in a wide range of fields, including pharmaceuticals, food processing, industry, and scientific research.
Common uses include:
The basic structure of a hydrometer is depicted in Figure 1. It consists of a body that provides buoyancy and a scale placed within it.
The lower part of the body contains an adjustable weight for buoyancy control. When immersed in the liquid to be measured, the buoyancy acting on the scale equals the weight of the liquid displaced by the scale's volume.
As a result, the scale sinks into the liquid to a degree where its weight is balanced by the buoyancy force. The scale is graduated, and when equilibrium is reached, the reading on the scale corresponds to the liquid's surface.
While most hydrometers are constructed from glass, plastic hydrometers are also available.
Besides hydrometers, other types of densimeters are primarily used in industrial settings. These include load cell-based, vibration-based, differential pressure-based, and radiation-based densimeters.
A load cell densimeter converts force magnitude into an electrical signal to precisely measure the weight of a submerged object in a liquid. It calculates the specific gravity of the test liquid based on the load change.
These densimeters offer higher measurement accuracy compared to conventional hydrometer-type densimeters and are less susceptible to operator skill variations, making them ideal for analytical tasks.
Vibration-based densimeters involve injecting the test liquid into a U-tube, which is then vibrated externally. The U-tube vibrates at a frequency determined by its mass, including the liquid. Consequently, the liquid's mass within the U-tube can be calculated from this frequency, allowing the density of the sample to be determined.
These densimeters are widely used for quality control, particularly in the food industry, due to their intuitive operation and rapid measurement capabilities.
Differential pressure densimeters utilize pressure differences between two points along a measuring tube, which are proportional to the liquid's specific gravity.
Radiation-based densimeters rely on the variations in gamma ray transmittance emitted by radioisotopes, which are influenced by the density of the material being measured.
*Including some distributors, etc.
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Microtrac MRB, a manufacturer of particle size analysis equipment, was established in 1979 and is headquartered in Massachusetts, United States. The company provides a range of products, including laser diffraction particle size analyzers, image analysis particle size analyzers, and Coulter principle particle size analyzers. Its products are used by multiple industries, including the pharmaceutical, food and beverage, and plastics industries. Microtrac MRB also provides particle size analysis solutions, with the company devoted to providing its customers with the finest products and services while offering a wide range of support options to help customers use its products to the maximum.
Qualitest International Inc., founded in 1999, is a supplier of testing equipment such as hardness testers, material testing equipment, universal testing machines, and instruments for testing rubber, metals, paper, plastic, paint, and packaging materials used in the gold and jewelry, mining, oil and gas, surveying, and ultrasonic industries. The Lauderdale, Florida-based business offers technical support, calibration, and repair either directly or through the global QualiService authorized network. The company has an online store with international shipping.
Anton Paar, founded in 1933 and headquartered in Graz, Austria, is a manufacturer and supplier of analytical instruments Their product range includes density meters for measuring liquid and solid density, concentration meters for analyzing solution concentration, viscosity meters for assessing liquid viscosity, particle size analyzers for measuring particle size in liquids or solids, and chromatography systems for substance separation and identification in mixtures. Anton Paar's products cater to a wide range of industries, including food and beverage, pharmaceutical, and chemical, providing analytical solutions for diverse applications.
BETA UTENSILI S.P.A., established in 1932, is an Italian manufacturer and supplier of workshop tools and industrial equipment, headquartered in Sovico, Monza Brianza. The company's product range includes over 16,000 tools for professional mechanics, catering to car repairs, industrial maintenance, and more. Among their offerings are the modular workshop equipment lines of Racing System (RS) C55 and Beta C45PRO, which include workbenches, modules, and more. They also provide various tools such as measuring and marking tools, cutting and general maintenance tools, plumbing tools, and power tools. These tools and equipment find applications in diverse industries, including automotive, aerospace, and mechanical engineering.
Hildebrand GmbH, established in 1993 and based in Gießen, Hessen, Germany, is an ASTM D 2240, DIN ISO 48, and ISO 48-certified manufacturer of measuring devices for industrial manufacturing operations. The company offers international rubber hardness degree (IRHD) systems for rubber materials, durometers for measuring the hardness of non-metallic materials such as plastics, and thickness gauges for measuring thickness. It also offers calibration and in-person training services for customers requiring additional support. The company serves clients in the textiles, rubber, and plastics manufacturing industries.
Gabbrielli Technology srl, established in 1939 and based in Calenzano, Italy, is a manufacturer of laboratory instruments for the ceramics industry. The company offers a range of laboratory instruments such as granulometers for measuring the size distribution of particles in a sample, abrasion testers for assessing a material's resistance to wear and tear by friction, and drying ovens for quickly and efficiently removing moisture from objects. It also offers water absorption testers, firing kilns, and mixing machines. The company mainly serves clients in the masonry, construction, and ceramics industries.
BIOBASE GROUP is a Chinese manufacturer of medical and laboratory equipment founded in 1999 and headquartered in Jinan, Shandong. The company offers over 200 different products including laboratory and medical cryogenic equipment, clinical analytical instruments, air protection devices, and specialized storage products. It also produces various medical consumables such as gloves, masks, and syringes. Biobase Group has branches in the US, India, Dubai, Singapore, and Kazakhstan. It offers global distribution and additional customization services to its clients in the biotechnology, environmental, cosmetic, and educational sectors.
Sommer Messtechnik, with roots going back to 1987, Sommer GmbH & Co KG became an independent company in 1997, and was renamed as Sommer GmbH, is a manufacturer specializing in the development and sale of sensors and environmental monitoring equipment in Austria. The company has been a sought-after partner in hydrography, meteorology, industry, and water, and its portfolio includes the RQ-30/RQ-30a, radar profiler RP-30, USH-9 snow depth sensors and wind sensors. These products are designed for data recording, transmission, and analysis of the captured data. Started at home market Austria, Germany and Switzerland, and has become a global supplier.
Berthold Technologies was founded in 1949 by Dr. Rudolf Berthold, located in Oak Ridge, Tennessee, and is a developer and manufacturer of measuring solutions. The company develops measurement technologies including level measurement, density measurement, bulk flow measurement, online moisture measurement, concentration measurement, and sources and shields. It's products find applications in a wide range of industries, including refineries, oil and gas, chemical and petrochemical, sugar, pulp and paper, food and beverages, building and construction, mining and mineral processing, water and recycling, and power generation. The company holds ISO9001 and ISO14001 certificates,
Anton Paar TorqueTec was founded as Brabender in Duisburg, Germany, in 1923, and is a leading global manufacturer of measurement and process engineering solutions for testing the quality of various raw materials as well as for the development and optimization of products, formulations, methods, and processes. As a renowned supplier of devices and equipment for testing a wide variety of material properties, our company stands for high quality and durable measuring and process technology. From laboratory equipment to small-scale production, our instruments are used in quality assurance as well as in research and development.
Mettler Toledo was incorporated in 1945 in Toledo, Ohio, and is today headquartered in Greifensee, Switzerland. Mettler Toledo is a manufacturer of various analytical instruments for use in laboratories, industrial and manufacturing, and food retailing applications to customers globally. Mettler Toledo offers many products across product lines for uses such as product inspection, process analytics, jewelry scales, moisture analyzers, and software for laboratory weighing. Mettler Toledo also offers numerous accessories such as density kits, hands-free accessories, weighing tables, and weight accessories.
Toyo Seiki Seisaku-Sho, Ltd., established in 1934 with headquarters in Tokyo, Japan, is a manufacturer of product and material measuring apparatus. The company's product portfolio comprises testing machines for a range of materials and test applications. Its products include abrasion testers, flammability testers, density testers, and permeability testers. These testing products have numerous applications, including by manufacturers to test the durability and safety of new products, by painters to test coating thickness, and in the production of fire-safe products.
A.KRÜSS, since 1796, has been a manufacturer of high-precision analysis and laboratory instruments. The instruments are refractometers, polarimeters, density meters, flame photometers, and melting point meters. More products are circulating thermostats, gas analyzers, microscopes, spectroscopes, and spectral measuring instruments. The company in Germany is ISO 9001:2015 and 14001:2015 certified and provides services such as application consulting, product demonstration, calibration & adjustments, maintenance & repair, and installation with warranty extensions. The company has a pages campus with facts about density measurement, radioactivity, measuring methods, and optical devices.
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.
Guangdong Hongtuo Instrument Technology Co., Ltd., established in 2002 and located in Guangdong, China, is a manufacturer, distributor, and trader specializing in physical testing and environmental testing instruments. The company provides a diverse range of products, including universal tensile testing machines, engineering plastics testing equipment, and leather footwear testing machines. Additionally, it offers services such as customer installation training, technical consultation, and business processing. These products are utilized in research laboratories, quality inspection institutions, and in the manufacturing of magnetic materials.
PCE Instruments UK Ltd., started in 199 and headquartered in Manchester, UK, is a manufacturer and supplier of test instruments, equipment, and tools for weighing, measuring, and control systems. The company offers more than 500 test equipment, including analyzers, inspection cameras, meters, detectors, and sensors, with applications in various fields like data acquisition, electrical engineering, environmental science, building inspection, and food processing. Its manufacturing and development division is ISO 9001 certified, all its test instruments, equipment, and tools are factory calibrated, and the company also provides services for custom test instrument design, installation, and maintenance.
Alfa Mirage, established in 1966 and headquartered in Osaka, Japan, is a manufacturer that develops products for the general and jewelry industries. The company's product line includes Precious Metal Tester GK 300, Electronic Densimeter, Jewelry Tools and Equipment, and more. It also offers lighting equipment, including LED lights, fluorescent lights, and halogen lights. Its Electronic Densimeter is designed to measure the density of solid and liquid materials and only takes 10 seconds to measure the density of a sample. It has achieved ISO 9001:2015 certification for its electronic densimeter product. Furthermore, it serves the jewelry industries and general industries.
H.W. Wallace & Co Limited, founded in the UK, is a supplier of testing equipment to the rubber and polymer industry. The company's product portfolio includes a comprehensive range of materials testing machines for assessing the physical properties of materials, such as tensile strength, hardness, and durability, quality control equipment helps clients maintain consistency and meet quality standards in their manufacturing processes and advanced NDT equipment that enables the inspection of materials and components without causing damage, ensuring safety and reliability.
Toshniwal Brothers Pvt. Ltd (TBP) is an Indian distributor of high tech laboratory equipment and instrumentation that was established in Geddalahalli, Bangalore in 1948. The company offers equipment and instruments for life science applications such as cell sorters, fluorescence microscopes and confocal microscopes, as well as tools for material and nanoscience applications including x-ray diffraction systems, atomic force microscopes, and nanoindenters. TBP products are mainly used in India’s research and development institutions, as well as in its biotechnology, pharmaceutical, chemical processing, metalworking industries.
Ranking as of April 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | AMETEK Measurement & Calibration Technologies Division |
7.9%
|
| 2 | A.KRÜSS |
6.7%
|
| 3 | NextGen Material Testing, Inc. |
5.6%
|
| 4 | Sommer Messtechnik |
5.6%
|
| 5 | Berthold Technologies |
5.6%
|
| 6 | Microtrac MRB |
5.6%
|
| 7 | Alfatek Services |
4.5%
|
| 8 | Anton Paar TorqueTec GmbH |
4.5%
|
| 9 | Toshniwal Brothers Pvt. Ltd. |
4.5%
|
| 10 | Qualitest International Inc. |
4.5%
|
Derivation Method
The ranking is calculated based on the click share within the densimeter page as of April 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 (%) |
|---|---|---|
|
Italy
|
5 | 21.7% |
|
Germany
|
4 | 17.4% |
|
United States of America
|
2 | 8.7% |
|
Austria
|
2 | 8.7% |
|
China
|
2 | 8.7% |
|
United Kingdom
|
2 | 8.7% |
|
India
|
2 | 8.7% |
|
Canada
|
2 | 8.7% |
|
Japan
|
1 | 4.3% |
|
Spain
|
1 | 4.3% |
55 products found
55 products
Shibayama Scientific Instruments Manufacturing Co., Ltd.
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■Features 1. Measurement is stable and easy due to the density gradient tube method. 2. We use our standard density sphere, which has a proven trac...
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A soil particle size test device with a scale of 0.995 to 1.050 and a reading of 1.000 in water at 15℃.
Yagyu Shokai Co., Ltd.
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■Features Measurement time and measurement person can be managed. - Sampling amount and suction speed can be easily adjusted with one hand. - The s...
Yagyu Shokai Co., Ltd.
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■Features - Can be converted to any unit, and can be converted to density/specific gravity at any temperature. - Can save over 1,000 measurement re...
Yagyu Shokai Co., Ltd.
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■Features - Can measure paint density based on ISO, JIS, ASTM, and DIN. ■Specifications Standards: Compliant/ISO 2811, Compliant/JIS K 5600-2-4, A...
Yagyu Shokai Co., Ltd.
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■Specifications Standards: ISO2811, DIN53217, JIS K5600
Yagyu Shokai Co., Ltd.
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■Features ・Compliant with ISO3507. - Calibrated (±0.001mL) and the net volume is engraved on the pycnometer. ■Specifications ・Material: Silicate...
Maximator Fluid Technologies Co., Ltd.
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The GESERCO hydrometer allows for quick, easy and accurate density determination of all petroleum products in g/ml. The product is NFT60101 compli...
Yagyu Shokai Co., Ltd.
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■Features ・Can measure a wide range from 0.700 to 1.850g/cm2. - Easy to operate, easy-to-read panel, and equipped with a hold function, making it ...
Yagyu Shokai Co., Ltd.
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■Features This measurement method uses Archimedes' principle, and the operation is as simple as hanging the object to be measured. - The windshield...
Yagyu Shokai Co., Ltd.
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■Features ・You can easily measure the specific gravity of objects and pellets floating in water. ・Water temperature correction required for speci...
Yagyu Shokai Co., Ltd.
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■Features Specific gravity can be measured using the immersion method. - When the balance is set to specific gravity measurement mode, the specific...
Yagyu Shokai Co., Ltd.
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■Features Capable of measuring solid specific gravity and liquid specific gravity (separate option required). ■Specifications ・Measurement method...
Soki Co., Ltd.
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We are selling the Mud Balance S-252 (with case), a mud water hydrometer for easily measuring the specific gravity of mud water on site. ■Features...
Soki Co., Ltd.
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We are selling public corporation-type on-site density measuring instruments (coarse particle size) S-209a and S-209b, which are used for on-site s...
2 models listed
Sato Keiryoki Mfg. Co., Ltd
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Soup concentration 0.0% to 32.0%, Baume degree 0.0 to 10.0 Types of liquid that can be measured: You can measure the concentration of ramen soup a...
Kaneko Chemical Co., Ltd.
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■Summary ・Used to float in various liquids and measure specific gravity. Cannot be used with cloudy or highly viscous liquids. -There are 19-piece...
Kaneko Chemical Co., Ltd.
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■Summary ・Used to float in various liquids and measure specific gravity. Cannot be used with cloudy or highly viscous liquids. -There are 19-piece...
TP Giken Co., Ltd.
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This device is used to measure the specific gravity of paints, varnishes, and other opaque viscous materials. The cup consists of a cylinder and a ...
ATAGO CO.,LTD.
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■Product overview The world's only titanium electrode. Electrode failure rate is only 0.08% Pursuing SDGs, it is designed to be used for a long tim...
ATAGO CO.,LTD.
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■Easy operation that anyone can use This device is a digital display type urine specific gravity refractometer. Easy operation allows anyone to eas...
ATAGO CO.,LTD.
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■For managing battery specific gravity of emergency power source (storage battery) Battery-powered, lightweight and compact design that can be used...
ATAGO CO.,LTD.
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■PEN series urine specific gravity model Introducing the PEN series urine specific gravity scale. Easy-to-use pen-shaped immersion (touch) type.
Marui Co., Ltd.
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■Concrete testing equipment Concrete: aggregate We handle testing equipment to examine the hardness and durability of aggregates. ■Features ・Siev...
Kokugo Co., Ltd.
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Specific gravity measurement kit AD-1653 ■Features Standard equipment includes sinker, thermometer, and beaker.
Hanna Instruments JAPAN
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■Easily measure Baume degree The Baume degree is used as an indicator of specific gravity (density). HI96812 converts sugar content (% Brix) to Ba...
Hanna Instruments JAPAN
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■Easy operation, measuring salinity (salt) in seconds HI96821 measures the salinity (g/100g, g/100mL), specific gravity, Baume degree, and temperat...
Hanna Instruments JAPAN
130+ people viewing
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■Measures salinity (seawater) in about 1.5 seconds HI96822 measures seawater salinity (PSU, ppt), specific gravity, and temperature with one device...
Kyoto Electronics Industry Co., Ltd.
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A simple density and hydrometer with a constant temperature function that can measure to three decimal places. There are no individual errors and m...
Kyoto Electronics Industry Co., Ltd.
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It can be operated with one hand and still allows measurements with 3 digits after the decimal point. Although it is portable, it has various conve...
