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Applications of Electrodes and Series of Instruments
pH Meter Series
pH measurement is widely applied in various fields such as universities,environmental protection,medicine,food,health,geology,metallurgy,and oceanography. Common acid rain,surface water,industrial wastewater,drinking water,beverages,daily chemical products,textiles,etc.,all need to undergo pH measurement. Since the hydrogen ion activity is often very small,it is inconvenient to use the concentration representation,so the pH value is used to represent the acidity and alkalinity of the aqueous solution. The definition of pH is the negative logarithm of the activity of hydrogen ions.
The commonly used glass pH electrode is a hydrogen ion-selective electrode sensitive to H+. The foundation and core of pH measurement is the electrode. It is composed of an indicator electrode and a reference electrode. When the pH value (H+ activity) of the solution changes,the potential change between the pH glass electrode and the reference electrode is measured by a pH meter,thereby determining the pH value of the solution.
Ion Meter Series
There are various ions in nature,and there are many methods for detecting ions. The ion-selective electrode method has advantages such as simple operation and low detection limit,and is often used to detect the content of various ions in aqueous solutions.
Conductivity Meter Series
Generally,we use conductance (the reciprocal of resistance) to measure the conductivity of a solution. The ability to transmit current is also measured by conductivity (the reciprocal of resistivity). When current passes through the electrode,oxidation or reduction reactions occur,causing changes in the properties of the solution near the electrode and resulting in a "polarization" phenomenon,which in turn affects the accuracy of conductivity measurement. Therefore,the general method for measuring conductance is the high-frequency alternating current measurement method,which can reduce or eliminate the above-mentioned polarization phenomenon.
Conductance electrodes are generally composed of a pair of parallel plates with fixed areas and positions. However,since the effective area and distance of the electrodes cannot be accurately measured,the electrode constant is usually determined with potassium chloride (KCI) or sodium chloride (NaCl) standard solutions. When using them,it is advisable to select standard solutions that are as close as possible to the solution to be measured to minimize measurement errors.
DO Meters Series
The dissolved oxygen (DO) in natural water is close to the saturation value (about 9mg/). When algae multiply vigorously,the dissolved oxygen content decreases. Pollution of water bodies by organic matter and reducing substances can reduce dissolved oxygen. The main factors influencing dissolved oxygen in water are: temperature,air pressure and salt content. Dissolved oxygen varies with changes in temperature,air pressure and salt content. Generally speaking,the higher the temperature,the greater the dissolved salt and the lower the dissolved oxygen in water. The higher the air pressure,the higher the dissolved oxygen in the water.
The dissolved oxygen meter of Leici features automatic temperature compensation,as well as pressure and salinity compensation functions,making it suitable for various fields.
Titrator Series
According to the indication principle and the chemical reactions that occur,the commonly used indication methods in titration analysis can generally be classified into: potentiometric titration,coulometric titration,stationary titration,conductive titration,photometric titration and temperature titration.
Compared with indicator titration,potentiometric titration has the advantages of being objective and reliable,having high accuracy,being easy to automate,and not being limited by the color or turbidity of the solution. It is an important analytical method.
ORP Meter Series
REDOX potential (ORP) is used to reflect the macroscopic REDOX properties exhibited by all substances in aqueous solutions. The higher the REDOX potential,the stronger the oxidizing property; the lower the REDOX potential,the stronger the reducing property. An ORP meter is used to measure the ORP of a solution,with the unit being mV. A positive potential indicates that the solution shows a certain degree of oxidizing property,while a negative potential indicates that the solution shows a certain degree of reducing property.
INESA and REX
History and Innovative Development
As one of the largest scientific instrument groups in China,Shanghai INESA ScientificInstrument Co.,Ltd. has a well-known brand REX with a history of more than 80 years in theanalytical instrument field.
REX is a high-tech enterprise integrating R&D,production,sales,application,and service.
- The largest domestic electrochemical water quality analysis instrument andelectrochemicalsensor development and production base.
- Host and participate in the formulation of major national and industry standardsrelated to electrochemical analysis instruments and sensors in China.
- Complete products(pH/ISE/EC/DO Meters,Titrators,Karl Fischer titrators,Waterquality analvzers,Online monitoring svstems,Electrochemical sensors and relatedReagents),from high-precision professional products to basic application products.
COMPANY PROFILE
In 1940, "Rex" gave birth to China's first pH meter and first glass electrode, marking the birth of Chinese analytical instruments. As the first professional manufacturer of analytical instruments in China, "Rex" has been focusing on the innovation and accumulation of electrochemical analysis instruments with more than half a century. "Rex" has unique advantages and status. The product categories are constantly expanding and the technical level is increase. "Rex" has more than 100 kinds of electrochemical analysis instruments, sensors and application solutions, including all kinds of instruments, such as laboratory, online and on-site testing, taking the lead of the domestic electrochemical analytical instrument industry and catching up with the international advanced level.
INESA Scientific Instrument Co., Ltd., a key enterprise under INESA Scientific Instrument (Group) Co., Ltd., specializes in scientific instrumentation. As one of China's largest scientific instrument enterprises, it is a industry leader in electrochemical analyzers and a state-supported "Little Giant" enterprise recognized for specialization and innovation.
· Prestigious Brand: Its self-owned brand "LeiCi" is a renowned Shanghai-name brand, recognized as a famous trademark, and complies with Shanghai Standards.
· Rich Heritage: The birthplace of China's first pH meter and glass electrode, it is also recognized as the origin of analytical instrumentation in China.
· Advanced Technology: Its electrochemical analyzers and automatic titrators are internationally leading in technological sophistication. The company has filled domestic gaps in high-precision pH meters, full-range conductivity meters, photometric and thermometric titration, and fully automated electrochemical analysis systems, rivaling global top-tier standards.
· Core Products: Electrochemical analyzers, titrators/moisture analyzers, water quality analyzers, electrochemical sensors, online water quality monitoring systems, and chemical reagents.
· Application Fields: Ecology and environment, education and research, biopharmaceuticals, food safety, and petrochemical industries.
· Market Leadership: Holds the top market share in China's electrochemical analyzer industry, maintaining a leading position in the sector.
· Accreditations & Honors:
- National "Little Giant" Enterprise supported for specialization and innovation
- Shanghai Municipal Enterprise Technology Center
- Shanghai Technology-based "Little Giant" Enterprise
- Software Enterprise certified by Shanghai Municipal Commission of Economy and Informatization
- Shanghai Civilized Unit
- Shanghai Model Collective
- Recipient of the "Shanghai May Day Labor Award"
Mission: To provide high-tech analytical instruments and premium services for the enhancement of people's quality of life.
Vision: To be a leading scientific instrument manufacturer, and a provider of monitoring/testing system solutions and operational services.
Core Values: Integrity · Responsibility · Innovation · Excellence · Collaboration · Sustainability
INESA Scientific Instrument Co., Ltd., a key enterprise under INESA Scientific Instrument (Group) Co., Ltd., specializes in scientific instrumentation. As one of China's largest scientific instrument enterprises, it is a industry leader in electrochemical analyzers and a state-supported "Little Giant" enterprise recognized for specialization and innovation.
· Prestigious Brand: Its self-owned brand "LeiCi" is a renowned Shanghai-name brand, recognized as a famous trademark, and complies with Shanghai Standards.
· Rich Heritage: The birthplace of China's first pH meter and glass electrode, it is also recognized as the origin of analytical instrumentation in China.
· Advanced Technology: Its electrochemical analyzers and automatic titrators are internationally leading in technological sophistication. The company has filled domestic gaps in high-precision pH meters, full-range conductivity meters, photometric and thermometric titration, and fully automated electrochemical analysis systems, rivaling global top-tier standards.
· Core Products: Electrochemical analyzers, titrators/moisture analyzers, water quality analyzers, electrochemical sensors, online water quality monitoring systems, and chemical reagents.
· Application Fields: Ecology and environment, education and research, biopharmaceuticals, food safety, and petrochemical industries.
· Market Leadership: Holds the top market share in China's electrochemical analyzer industry, maintaining a leading position in the sector.
· Accreditations & Honors:
- National "Little Giant" Enterprise supported for specialization and innovation
- Shanghai Municipal Enterprise Technology Center
- Shanghai Technology-based "Little Giant" Enterprise
- Software Enterprise certified by Shanghai Municipal Commission of Economy and Informatization
- Shanghai Civilized Unit
- Shanghai Model Collective
- Recipient of the "Shanghai May Day Labor Award"
Mission: To provide high-tech analytical instruments and premium services for the enhancement of people's quality of life.
Vision: To be a leading scientific instrument manufacturer, and a provider of monitoring/testing system solutions and operational services.
Core Values: Integrity · Responsibility · Innovation · Excellence · Collaboration · Sustainability
Authentication
Business Type:
Manufacturer/Factory & Trading Company
Main Products:
Electrodes
,
Magnetic Stirrer
,
Electrode Accessories
,
Cables
,
Connectors
,
Instruments and ...
Year of Establishment:
2011-03-15
Number of Employees:
47
Address:
No.5 Yuanda Road, Anting, Jiadingdistrict, . Postal Code 201805, Shanghai, China
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