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This section provides an overview for galvanostats as well as their applications and principles. Also, please take a look at the list of 9 galvanostat manufacturers and their company rankings. Here are the top-ranked galvanostat companies as of December, 2024: 1.INTERCOVAMEX, 2.Lambda Photometrics Ltd., 3.Arbin Instruments.
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Categories Related to Galvanostats
A galvanostat is a device in electrochemistry.
This device applies a voltage to a sample to induce a chemical reaction or to detect a change in a physical quantity caused by a chemical reaction. Galvanostats are commonly used in combination with potentiostats, which are also measuring devices in electrochemistry.
These two devices control a cell containing three types of electrodes: a sample electrode, a counter electrode, and a reference electrode. What is controlled by potentiostats and Galvanostats is different, with the former controlling voltage and the latter controlling current.
Galvanostats are used in chronopotentiometry and battery discharge testing.
Chronopotentiometry is a method of measuring data by tracking changes in electric potential over time. Generally, a constant current is applied to the sample electrode and parameters related to electrochemical reactions are obtained with no flow between the sample electrode and the electrolyte.
The parameters obtained include the concentration of substances involved in the redox reaction and the diffusion coefficient. To handle the redox reaction of the components present in the electrolyte, platinum is used as the electrode for this measurement, as it does not easily dissolve into ions.
There are primary and secondary batteries. Primary batteries are used-up batteries and can only be discharged. Secondary batteries, on the other hand, can be discharged and recharged, and can be used repeatedly.
Galvanostats are used to evaluate discharge and recharge performance. Lithium-ion batteries are examples of rechargeable batteries. Lithium-ion batteries are used in smartphones and hybrid vehicles.
Galvanostat requires a signal generator and a PC as well as the object to be measured. A frequency response analyzer (FRA) is used for the signal generator, which adds a sine curve with a constant frequency. The sine curve output from the FRA is input to the Galvanostat to produce a voltage. The voltage generated in the Galvanostat causes a current to flow through the object being measured, and the response signal from the sample is input to the Galvanostat.
The signal input to the Galvanostat is converted to a wave and input to the FRA. At this time, a sin (omega) wave is generated, whose phase is shifted by omega from the input sin wave. The phase shift depends on the object to be measured.
The sin (omega) wave is Fourier transformed in the FRA and only the components of the measurement frequency are extracted. Finally, the data extracted by the Fourier transform is sent to a PC. By monitoring these values, it is possible to quantitatively evaluate the parameters.
FRA is a device that applies a sinusoidal signal to an object under test and observes its frequency response. FRA uses a digital correlation method called SSC (Single Sine Correlation) to determine the impedance.
FRA is the most widely used measurement method for electrochemical measurement applications, with a basic amplitude accuracy of 0.1% and a basic phase accuracy of 0.1 degree. The response signal returned from the object to be measured is not only the frequency of the input signal, but also includes other frequency components.
In order to obtain only the frequency of the input signal, FRA multiplies the response signal by a sin wave in phase with the input signal and a sine wave with a phase shifted by 90 degrees. By dividing the frequency components into real and imaginary components, it is possible to acquire the same frequency components as the input signal in the response signal.
One of the features of FRA is its excellent noise reduction function: FRA can reduce high-frequency components to -60dB or lower with a single measurement using the single sine correlation method. Further removal of noise components is possible by increasing the number of integrations. Even if the signal to be analyzed has an amplitude below the noise, it can still be extracted.
Another advantage is the wide frequency range (10uHz to 1MHz) over which it can measure. Since the signal is digitally processed including the output of the internal oscillator, there is no waveform distortion.
*Including some distributors, etc.
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Meiden Europe is a German manufacturer of electrical equipment and systems established in 1996 as a wholly-owned subsidiary of Japan’s Meidensha Corporation, which has been in operation since 1897. Headquartered in Unterschleissheim, Bavaria, the company produces various electrical equipment including surge arresters, inverters, and motors, as well as electrical systems for railway power supply and substation automation. These are utilized in a wide range of industrial processes, such as in power transmission or distribution, water treatment and robotics. Meiden Europe has sales offices and facilities across the European Union, including in France, Switzerland, Slovakia, Austria, and the United Kingdom.
Metrohm, founded in 1943 and headquartered in Herisau, Switzerland, is a manufacturer of precision instruments for chemical analysis. They offer products such as dispensing tools, Stripping Analysis (CVS) instruments, ion chromatography systems, related accessories, and more. Their products cater to various sectors, including pharmaceuticals, chemicals, and defense, which are used for the analysis and handling of chemicals. Metrohmy holds IQNet and EcoVadis Silver Recognition award for sustainability and is compliant with GDPR standards.
AMETEK Scientific Instruments is based in Oak Ridge, Tennessee, USA, and is an ISO 9001-certified manufacturer of precision analysis instrumentation established in 2006 as a division of AMETEK, Inc. The company produces professional electrochemical, corrosion, and material analysis instruments. These include photoelectrochemical test systems used in solar cell research, frequency response analyzers, and energy storage testing products. The company’s products are mainly used by clients in the research, power generation, and petrochemical sectors.
Arbin Instruments is a manufacturer of test equipment for batteries and other energy storage devices headquartered in College Station, Texas, and was founded in 1991. The company provides electric vehicle cell testing, half, full, and symmetric cells testing, and life cycle testing services. It also provides central monitor and control, central data, and group management channel synchronization solutions to monitor status of tests, backup test data, and synchronize test progress. The company is also located in Germany, China, Hong Kong, and other countries.
Phadke Instruments, established in 2005 and based in Mumbai, India, is a distributor and supplier of analytical and research instruments. The company's product range includes electrochemistry equipment, water and soil testing tools, energy-related instruments, devices for sample preparation, and spectroscopy equipment. These products are pivotal for researchers and professionals engaging in advanced analytical procedures, electrochemical studies, and various material science explorations. Serving industries like research services, academia, environmental studies, and energy sectors, they ensure precision and reliability in measurements. The company offers services that enhance the utility of these products, such as electrochemical corrosion testing.
Lambda Photometrics Ltd., incorporated in 1977 and based in Harpenden, England, United Kingdom, is an ISO 9001:2015-certified distributor and service provider specializing in electro-optical instrumentation. The company primarily produces lasers for medical and industrial applications, and electro-optical instrumentation for measurement and analysis. It also offers development and maintenance services for its portfolio lasers, and custom laser-based equipment for unique client projects. The company’s products are mainly used by clients in the industrial manufacturing and automation sectors.
Maranata-Madrid SL is a supplier of weather observation systems and electronic analytical and measurement instrumentation, founded in 2010 and located in Algete, Madrid. The company's product categories includes data loggers, weather stations, sensors and probes, and portable meters. It provides instruments for geophysics and seismology, power and energy Industries, and industry and process control. Its products include transmitters, water quality monitors, and flow meters, and its products are applicable in the environmental, educational, and pharmaceutical industries.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | INTERCOVAMEX |
17.6%
|
| 2 | Lambda Photometrics Ltd. |
11.8%
|
| 3 | Arbin Instruments |
11.8%
|
| 4 | AMEL S.r.l. |
11.8%
|
| 5 | Phadke Instruments |
11.8%
|
| 6 | Meiden Europe |
11.8%
|
| 7 | Maranata-Madrid SL |
8.8%
|
| 8 | Metrohm |
8.8%
|
| 9 | AMETEK Scientific Instruments |
5.9%
|
Derivation Method
The ranking is calculated based on the click share within the galvanostat 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.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
Germany
|
1 | 16.7% |
|
Switzerland
|
1 | 16.7% |
|
India
|
1 | 16.7% |
Italy
|
1 | 16.7% |
|
United Kingdom
|
1 | 16.7% |
|
Spain
|
1 | 16.7% |
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