Reference Electrodes, Probe, Electrode, Digital

• Customization: Available
• Warranty: 6 Mouth
• Display: Electrical Signal
• Appliance: Laboratory
• Portable: Portable
• Certification: RoHS, ISO9001
• Type: Reference Electrodes
• Transport Package: Box
• Origin: China
• HS Code: 9027899090
• Production Capacity: 50000 Pieces/Year

Product Description

Product Description

Reference Electrode: Nature and Role

The reference electrode or "half-cell" is a system that provides a constant defined potential in electrochemical analysis. The accuracy and longevity of the pH or ion measurement system highly depends on the accuracy and stability of the reference electrode, making it an essential and critical design input in the overall system.  

Specification

Designing and Selecting a Reference System

The reference design can enable the ability to control the electrolyte leakage rate, electrolyte or fill solution, and sample matrix compatibility options. Because the reference electrode is often the limiting factor regarding the sensing system's overall life, there are features such as multiple junctions, junction materials, reference electrolyte chemistry, and other design inputs that can prolong the life of the reference system. The electrolyte inherently "leaks" from the reference junction in many of the designs. Controlling that leakage rate and mitigating the leakage of silver ions is another reference electrode strategy. 
 
For more information regarding the technical background of reference electrodes, please visit our reference electrode article in AlpHa Insights (Insert Link to page). AlpHa's subject matter experts will help coach and guide the appropriate reference system for the required application. For example, depending on the sample matrix, it is critical to pick the reference type and corresponding salt bridge. The following are reference potentials for common reference systems used globally:

Reference Electrode System	Electrolyte	Potential vs. Standard H2 Electrode (SHE)	Potential vs. Saturated Calomel Electrode (SCE)
Ag / AgCl	Sat. KCl	200 mV	-44 mV
Ag / AgCl	3M KCl	210 mV	-32 mV
Hg / Hg2Cl2(Calomel) (SCE)	Sat. KCl	244 mV	0 mV
Hg / Hg2Cl2(Calomel)	Sat. LiCl	200 mV	-45 mV
Hg / HgO	20% KOH / 4.24M	98 mV	-143 mV
Hg / Hg2SO4	Sat. K2SO4	640 mV	408 mV

Combo vs. Stand-alone Reference Electrode

While it is much more common in the industry to combine the reference with the working electrode, there are applications where a stand-alone working and reference electrodes are desired. This is critical when designing for applications that cause the reference to poison or clog prematurely.

Environmental monitoring applications that require to measure multiple parameters simultaneously often utilizes a shared reference electrode with replaceable or refillable options in the sensor array. For example, pH, ORP and ISE sensing "half-cell" or "mono" electrodes can all share a single reference half-cell in a multiparameter electrode system or sonde. This can optimize the service life of the electrodes where long-term deployment is essential. Aurora Measurement Solutions designs both customizable stand-alone reference electrodes and combination electrodes for all ranges of applications.

Company Profile

Aurora Scientific Instruments (Shanghai) Co., Ltd. (Aurora) is a subsidiary of AlpHa Measurement Solutions, LLC (AlpHa) in China and founded in 1994. Relying on the advanced  technology of AlpHa , Aurora specializes in the production of all kinds of electrochemical sensors which are widely distributed in Europe, America, Asia Pacific and other global markets.The quality and appearance are highly appreciated by both domestic and abroad customers, and also welcomed by users.
Aurora has the ability of machining, injection molding, mold designing and manufacturing, and is dedicated to customized products for users, including pH, ORP, conductivity, dissolved oxygen, ion, residual chlorine, multi parameter electrodes, etc.Under the AlpHa Group, there are three strong brands, Aurora, ASI and van London with more than 100 years of industryexperience in the precise and high-quality water quality testing market. Alpha is committed  to becoming a global leaderin liquid sensor technology through the integration of products, technology and personnel.
Aurora takes global development as its mission, maintains a diversified and dynamic corporate culture, and provides the best service with the concept of customer first, integrity, mutual respect, reliability, safety, quality and excellence.

FAQ

Q: Are you trading company or manufacturer ?

A: We are factory.

Q: Do you provide samples ? is it free or extra ?

A: We can provide the sample, it is extra

Q: What is your terms of payment ?

A: 100% T/T in advance ,balance before shippment.