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This section provides an overview for air leak testers as well as their applications and principles. Also, please take a look at the list of 34 air leak tester manufacturers and their company rankings. Here are the top-ranked air leak tester companies as of December, 2024: 1.Coltraco Ultrasonics, 2.Anhui Wanyi Science and Technology Co.,Ltd., 3.Ridzewski GmbH.
Table of Contents
An air leak tester is a device to detect air leaks from inside an object.
Leak testing is performed by pressurizing or depressurizing the inside of an object and detecting the pressure with various methods, such as direct pressure or differential pressure. The appropriate type of air leak tester depends on the shape of the object and whether it contains anything other than air or water.
Unlike a simple leak test using soapy water, an air leak tester can accurately detect the location and amount of leaks.
Air leak testers can be used not only to simply check for leaks, but also to quantitatively determine the amount of leakage and to automate inspections.
Specific leak inspections include the following:
Air leak testers are also used for leak testing of circuits for flow control, and are often used to inspect automotive parts because many automotive parts, such as washer fluid tanks and airbags, do not allow air leaks.
Leak testing methods are specified in detail in "JIS Z 2330:2012 Types and Selection of Leak Testing Methods".
There are many leak testing methods that use air or other gases, including the immersion method, the foaming method, the pressure change method, the differential pressure change method, the flow measurement method, and the ultrasonic method.
The immersion method involves pressurizing an object with gas, submerging it in a tank of liquid, and checking the bubbles that emerge. Since this method is mainly a visual inspection, it requires the skill of the operator and has the disadvantage of causing variation. Also, quantitative data management is difficult.
This method applies a foaming liquid containing a surfactant, etc., to the surface of an object and detects gas leakage by the foaming phenomenon. This method is more sensitive to leakage than the immersion method.
The pressure change method is a method of adding or reducing internal pressure to an object and checking the pressure at which the internal pressure becomes constant.
The differential pressure change method is almost the same as the pressure change method, but checks the change in differential pressure between the object and the reference item.
The flow measurement method applies internal pressure to the object and measures the flow rate to compensate for air leakage.
This method uses an ultrasonic detector to detect the ultrasonic waves generated when gas leaks from the leakage point of an object.
Air leak testers are broadly classified into direct pressure type and differential pressure type.
The direct pressure type air leak tester performs leak testing by continuously measuring actual pressure. First, the object is pressurized or depressurized. During the pressurization and depressurization processes, the temperature and volume of the air are unstable, leading to fluctuating pressure. Therefore, the tester waits until equilibrium is reached at a certain pressure.
Once equilibrium is confirmed, the pressure is continuously measured. If there is a leak somewhere, this pressure will slowly drop, which can be detected to check for leaks.
The differential pressure type air leak tester is a method of measuring the differential pressure from a reference pressure. In this method, a leak-free measuring object called a master is prepared, and the master is connected to the object.
Then, as in the direct pressure method, the master is pressurized and balanced, and the pressure difference is measured by a sensor connected between the master and the object. If there is no leakage anywhere in the object, no differential pressure is generated, but if there is a leak in the object, a differential pressure is detected based on the amount of leakage.
A pressurized type leak tester is suitable for workpieces that are used under pressure or that contain liquid inside the workpiece.
For example, an internal pressure type leak tester is suitable for a workpiece with many openings, while an external pressure type leak tester is suitable for a workpiece with few openings.
If the workpiece is to be used under negative pressure, a leak tester with a reduced pressure method should be selected.
1. Automation and Labor Saving
Leak testers can quantify pressure changes and other data, enabling automated inspections and labor saving processes.
2. Quality Improvement
Leak testing can be quantitatively monitored and inspection can be performed without relying on human skill. This improves accuracy and contributes to quality improvement. In addition, data can be statistically processed and analyzed.
3. Cost Reduction
Cost reduction benefits include fewer complaints, lower defect rates, and more efficient inspections.
*Including some distributors, etc.
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WITT Gas Controls LP, a company established in 1945, is based in Witten, Germany, as a manufacturer of gas safety and control equipment. Its specialization is manufacturing gas mixers, mobile analyzers, gas receivers, gas analyzers, and ambient air monitoring. It also manufactures package leak detectors, barcode readers, pressure regulators, pressure regulating stations, and gas filters. The company obtained several ISO certifications, including ISO 9001 and ISO 22000. Its manufactured products are utilized in metalworking, glass processing, biogas, welding, and medical industries across China, Indonesia, Australia, Germany, and Turkey.
InterTech Development Co., since 1973, has been a manufacturer of automated leak test and flow test equipment, including single-channel leak detectors and multi-channel leak detectors. Exclusive instruments such as mass flow sensors, improved differential pressure transducers, heat exchangers, pumps, and valves are available for use in the automotive and industrial sectors. The Skokie, IL-based company provides medical devices such as sleep apnea leak testers, oxygen delivery systems, blood collecting bay leak testers, and pressure decay leak testers. The company is ISO 9001 registered and ISO/IEC 17025:2017 accredited.
Presto Stantest Private Limited, established in 1997 and headquartered in Faridabad, India, is a global manufacturer of laboratory testing instruments for different industries. The company's products include plastic-polymer testing instruments. It also offers paper-packaging test systems and paint, plating, and coating testing instruments. Its environment testing chambers are specially manufactured to perform humidity and temperature testing. Over 13,000 customers worldwide use the company's products, and its notable clients include Dabur, Pepsi, and Havells.
Pharma Test Apparatebau AG is a manufacturer of testing equipment for the pharmaceutical, food, and cosmetics industries established in 1979 and based in Hainburg, Germany. The company primarily produces galenic instruments for ampoule testing, tablet hardness testing, and tablet disintegration testing. It also offers online and offline automated dissolution testing systems, media preparation tools, and ultraviolet visible (UV-VIS) spectrometers. The company mainly serves clients in the European Union’s pharmaceutical, food, and dietary supplements industries.
Bonfiglioli Engineering is an Italian manufacturer of in-line and laboratory machines that was established in 1974 as a subsidiary of the American TASI Group of companies. The company’s product portfolio includes benchtop Container Closure Integrity Testing (CCIT) systems, automated visual inspection systems, and non-destructive headspace gas analysis systems. These are crucial for packaging integrity testing, analysis, and quality control. Bonfiglioli Engineering products are mainly used in the food and beverage, pharmaceutical, and chemical industries.
Powermaster Engineers Pvt. Ltd. is an Indian manufacturer of tube expanders, tube cleaners, pipe beveling machines, and other tube processing equipment. The company was founded in 1972 and is headquartered in Khairne, Navi Mumbai. Its main activity is designing, developing, and manufacturing tube processing equipment such as tube tools, bolting tools and spring balancers. The company also offers a wide range of bolting services, such as controlled bolting, hot bolting, in-situ machining, re-tubing and repairs, and calibration. Powermaster's products are used by many customers, including the automotive, aerospace, and oil and gas industries.
Zeltwanger, founded in 1982 and based in Tübingen, Germany, is a manufacturer of products in the leak testing, thermal management, and mechanical engineering fields and consists of eight independent companies. Its contract manufacturing business manufactures prototypes, machine components, and 3D molded parts. The thermal management business manufactures systems for producing and functional testing efficient heat exchangers like those used in heat pumps, radiators, and conditioning units. The company also makes leak-testing products and serves the packaging, medical technology, and optical industries. All its companies are ISO 9001 certified, and its calibration laboratory is ISO/IEC 17025 accredited.
Anhui Wanyi Science and Technology Co. Ltd. is a Chinese manufacturer of analysis equipment and instruments established in Hefei, Anhui in 2003. The company's specialized product lineup includes helium mass spectrometer leak detectors, flue gas emissions monitoring systems, and leak detectors for sealed products. It also offers liquid chromatographs and atmospheric aerosol laser radar mounted mobile vehicles. These are mainly used by clients in the power generation, water treatment, and mining sectors. Aside from its products, the company offers personnel training and maintenance services for customers needing additional support.
Lindab AB, founded in 1959 and headquartered in Grevie, Sweden, is a manufacturer and distributor of ventilation products and systems. The company provides both individual components and complete indoor ventilation systems like air distribution, air diffusion and air control equipment. It also provides a range of roof, wall and rainwater systems in northern and eastern Europe. It also provides softwares for its ventilation systems and building products. The company has obtained ISO 9001 and 14001 certifications for quality and environmental management systems.
Labthink, established in 1989 with its international headquarters located in Boston, USA, is a manufacturer and supplier of testing instruments and solutions for quality control. Their products include gas permeability testers, tensile strength testers, thickness gauges, burst strength testers, and heat seal testers. These instruments are used to ensure the quality and performance of various materials and products in industries such as food packaging, textiles, and pharmaceuticals. Labthink holds ISO 9001:2000 certification and CNAS laboratory accreditation certificate.
Marposs S.p.A. is headquartered in Bentivoglio, Italy. The company serves industries such asa aerospace, semiconductors, machine tooling, and biomedical as a manufacturer and as a service provider. The company’s products vary by industry but include tools for gauging, profiling, and monitoring, as well as data management systems and machines for testing and automation. The company’s services include after sales service, customer training, original spare parts, retrofit and upgrade of existing machinery, and project management consulting services.
Fukuda Co., Ltd. is a manufacturer of inspection equipment for industries such as automobiles, aircraft, electronics, pharmaceuticals and cosmetics, infrastructure and industrial machinery, and refrigeration and air conditioning. The company is based in Tokyo, Japan, and was founded last February 1962 and was first named as Fukuda Denki Seisakusyo. They have eight domestic offices and eleven international offices located in Korea, Taiwan, India, Thailand, Singapore, Malaysia, Indonesia, Vietnam, the United States, Mexico, and Germany.
Cosmo Instruments Co., Ltd., founded in 1970 and headquartered in Hachioji, Tokyo, is a manufacturer of sensors and testing equipment, with ISO 14001 and ISO/IEC 17025 certifications. They specialize in manufacturing sensors and testing equipment such as air leak testers, manometers, flow testers, helium/hydrogen leak testers, and pressure flow peripherals. These products are used to detect and measure leaks in various systems and components to ensure their proper functioning and safety.
Link Testing Instruments Co. Ltd., founded in 2010 and based in Jinan, Shandong, is a Chinese manufacturer of testing instruments for packaging materials. The company's product range includes permeability property testers for measuring gas and water vapor transmission rates in paper sheets, non-woven fabrics, and thin film samples. The company also develops instruments for testing food and medical packaging materials, adhesives, and containers. These products find applications across various industries, such as medical equipment, pharmaceuticals, and tobacco. With the support of a research and development center, the company provides testing techniques to meet the needs of both domestic and international customers.
TECNA srl is based in Mirandola, Modena, Italy, and is an ISO 9001-certified manufacturer of electronic equipment originally established in 1984 before being acquired by the Marposs Group in 2016. The company’s products are primarily used for industrial process control operations. These include solvent dispensers, leak and flow testers, and data collection software. The company also provides calibration, installation, and maintenance services for its customers with unique project specifications. Its products are used by clients in the home appliance, medical, and automotive industries.
innomatec GmbH, established in 1983 and headquartered in Hessen, Germany, is a manufacturer of leak testing solutions and related equipment. The company specializes in leak test methods, including air, helium, and tracer gas tests. Its products include leak testers, test benches, and quick connectors, offering over 100 test object connections. It also provides standard helium gas recycling solutions for manufacturing lines. The company’s solutions span from laboratory setups to fully automated systems, meeting the testing requirements of industries such as automotive, medical devices, and packaging. It provides repair, maintenance, and calibration services, ensuring compliance with industry standards.
Dr. Wiesner Steuerungstechnik GmbH, established in 1968 and headquartered in RemsHalden, Germany, is a manufacturer of industrial test engineering solutions for fluidic and other measured parameters. The company specializes in leakage testing, flow testing, and functional testing. It offers various testing devices, accessories, and basic test benches. Its expertise spans from manual instruments to fully automated systems. Its testing methods include helium leak detection and differential pressure testing. Its solutions are used in automotive, casting, and medical products. The company also provides customer service, including consultation, maintenance, and calibration services.
Ceta Testsysteme GmbH, founded in 1988 and headquartered in Hilden, Germany, is an industrial leak testing and flow measurement device designer and manufacturer. The company's products include hydrogen leak testers and automated thermal mass flow testers. Its Ceta accessories program offers various products required for the creation and implementation of test processes and physical testing equipment, including Ceta test device data logging and control software, digital pressure manometers, and polyamide tubes. The company's services include consulting, feasibility studies, and equipment repairs.
ForTest Group (FTG) is an Italian manufacturer of leak and flow testing equipment that was established in Monena in 1989. The company primarily produces various types of leak testers such as differential, absolute, metrology, and flow models. It also offers control, monitoring and analysis software, as well as accessories compatible with portfolio products (e.g. calibrators, connectors). FTG products are used in leak testing of oleodynamic systems, medical devices, home appliances, automotive assemblies, and e-mobility products such as plug-in hybrid vehicles.
HCTE PTE. LTD. is an ISO 9001-certified manufacturer and supplier of industrial testing equipment that was established in Singapore in 2000. The company primarily produces performance testing and leak detection equipment for use in air quality management applications. These products include air tightness testing equipment, helium leak detectors, and auto filter testing equipment for oil or air filters. It also offers custom manufacturing and product testing services for unique projects. The company chiefly serves clients in Asia’s automotive, refrigeration, and HVAC industries.
AMETEK MOCON, established in Minneapolis, MN in 1966, is a manufacturer and distributor of gas measurement and control instruments and services. Their product portfolio includes Gas Analyzers, gas detectors for detecting and monitoring hazardous gases, Gas Flow Meters, gas regulators used for pressure control and distribution for different gas applications, and gas mixtures used to calibrate and validate gas analyzers. The company serves industries, including food and beverage, pharmaceutical, medical device, and environmental applications.
ATEQ Leak Testing, established in 1975 in France, is a manufacturer and supplier of leak testing equipment and solutions. The company’s product range includes various leak testers, such as differential pressure decay testers, mass flow testers, and vacuum decay testers. These cutting-edge technologies are comprehensively utilized in industries such as automotive, medical devices, aerospace, and electronics manufacturing. Putting emphasis on quality and creativity, ATEQ Leak Testing provides advanced leak-testing solutions that ensure product integrity and reliability. With a global network of offices and distributors, ATEQ continues to deliver accurate and efficient leak-testing solutions to industries worldwide, enhancing quality control and safety.
Chengde Jinjian Testing Instrument Co. Ltd., founded in 1994, is a Chinese manufacturer in Chengde, Hebei, specializing in material testing equipment. The company's product range includes universal testing machines tailored for testing plastics, polyethylene, and steel pipes. It also provides melt flow indexers to measure the molecular weight of polymers and pendulum impact testers to determine materials' impact strength. Its portfolio also includes testers for heat deflection temperature (HDT) and Vicat softening temperature. The company is certified with ISO9001:2015 and serves customers in various regions, including Asia, Europe, and the United States.
Headquartered in London, Coltraco Ultrasonics is a global company specialising in research, design, development, manufacture, integration and sustainment of high-tech systems, products and services. Our organisation is comprised of Manufacturing, Scientific, Research and Technological Development & Solutions: Our Company: COLTRACO ULTRASONICS Our Laboratory, co-located with the Centre for Advanced Instrumentation, part of the Department of Physics, Durham University Our Research Organisations, the Durham Institute of Research, Development & Invention (DIRDI) Our Centre for Underwater Acoustic Analysis (CUAA) Coltraco Ultrasonics offers non-invasive fluid monitoring for various containers, airtightness and watertightness testing, flow rate calculations, and NDT instruments for material thickness measurement, mainly for corrosion monitoring, all while delivering genuine value to their customers globally through their scientific and institutional values and the quality of their services.
TCEM, founded in 2002, and headquartered in Le Havre, Normandie, is a manfuacturer and distributor of industrial maintenance equipment. The company offers a range of products such as tube pullers, valve lapping machines, and level control instruments. These products are utilized in the manufacture and maintenance of tubular exchangers, boilers, and for level control in the petrochemical and nuclear sectors. The company holds several certifications including ISO 19443:2018 and ISO 9001:2015 for its quality management system.
Dvaci, established in 2011 and based in Querétaro, Mexico, is a distributor of testing and control equipment for package leak testing and quality control. The equipment is used for various purposes, including altitude simulation test methods, leak tests for vacuum packages, and packaging burst tests. One of the products the company stocks is the CDV pharma, a leak detection instrument designed for testing pharmaceuticals with the Methylene blue dye test method. The company also stocks the CDV floor stand models, which are large vacuum chambers designed for testing voluminous packages or multiple samples at the same time.
Guangzhou Biaoji Packaging Equipment Co., Ltd. is headquartered in Guangzhou, China as a supplier of masks, flexible packaging, thermal, spout sealing, and battery diaphragm testing equipment since 2002. The company offers packaging testing equipment such as melt flow indexers and tensile, drop dart impact, leakage, and cap torque testers. It also supplies environmental test instruments such as modified atmosphere refrigerators, pressure cooker test chambers, salt spray test chambers, ozone aging test chambers, and temperature & humidity test chambers. GBPI is an ISO 9001-certified supplier and its instruments are used in food, pharmaceutical, printing industries, packaging, and research institutions & colleges.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Coltraco Ultrasonics |
11.5%
|
| 2 | InterTech Development Co. |
7.3%
|
| 3 | Anhui Wanyi Science and Technology Co.,Ltd. |
6.3%
|
| 4 | ATEQ |
6.3%
|
| 5 | Ridzewski GmbH |
5.2%
|
| 6 | Marposs |
5.2%
|
| 7 | Cosmo Instruments Co., Ltd. |
5.2%
|
| 8 | Rausch GmbH |
4.2%
|
| 9 | Guangzhou Biaoji Packaging Equipment Co.,Ltd. |
4.2%
|
| 10 | HCTE PTE. LTD. |
3.1%
|
Derivation Method
The ranking is calculated based on the click share within the air leak tester page as of December 2024. 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 (%) |
|---|---|---|
|
China
|
4 | 20.0% |
|
United States of America
|
2 | 10.0% |
|
India
|
2 | 10.0% |
|
Germany
|
2 | 10.0% |
|
Italy
|
2 | 10.0% |
|
Japan
|
2 | 10.0% |
|
Sweden
|
1 | 5.0% |
|
Singapore
|
1 | 5.0% |
Switzerland
|
1 | 5.0% |
|
United Kingdom
|
1 | 5.0% |
|
France
|
1 | 5.0% |
|
Mexico
|
1 | 5.0% |
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