Electrochemical Consumables
Reference Electrode Calomel Silver Chloride Mercury Sulfate for Laboratory Use
Item Number : ELERA
Price varies based on specs and customizations
$19.90 / set
- Applicable temperature range
- 0 ~ 60℃
- Types
- Complete and diverse models, customizable
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Introduction
Calomel, Silver Chloride, and Mercury Sulfate are three important compounds used in laboratory equipment and consumables. Calomel, also known as mercurous chloride, is a white or yellowish powder that is insoluble in water. It is used as a reference electrode in electrochemistry and as a cathartic and diuretic in medicine. Silver Chloride is a white or grayish-white powder that is insoluble in water. It is used as a disinfectant, an antiseptic, and a photographic reagent. Mercury Sulfate is a white or yellowish-white powder that is soluble in water. It is used as a disinfectant, an antiseptic, and a fungicide.
We offer complete models of reference electrodes for electrochemical experiments that are resistant to acid and alkali, made with high-quality materials, and designed to be both safe and durable. Additionally, we provide customization options to meet your specific needs.
Technical specifications
Saturated calomel electrode
| Features | Good reproducibility, accurate potential application |
| Applicable temperature range | 0 ~ 25℃ |
| Dimensions | The overall length is 140mm, with the upper tube measuring 9.5mm by 35mm and the lower tube measuring 6mm by 65mm. |
| Types | Amalgam-mercury type. It offers a neutral charge and is available in three variations: single salt bridge, double salt bridge, and bent tube. |
Silver chloride electrode 1
| Features | suitable for small volumes |
| Applicable temperature range | 0 ~ 40℃ |
| Dimensions | 90mm overall length, 4*45mm in the down tube |
| The electrode properties are Ag/AgCI | |
Silver chloride electrode 2
| Features | suitable for any situation |
| Applicable temperature range | 0 ~ 60℃ |
| Dimensions | 105mm overall length, 6*45mm in the down tube |
| The nature of the electrode is Ag/AgCI, and the curved tube can be customized for silver chloride | |
Saturated silver chloride electrode
| Features | Potential stability |
| Applicable temperature range | 0 ~ 60℃ |
| Dimensions | The overall size of the unit is 140mm, with the upper tube measuring φ9.5*35mm and the lower tube measuring φ6*65mm. |
| Types | Ag/AgCI type, neutral electrode; there are two kinds of single salt bridge and double salt bridge |
Mercurous sulfate electrode
| Features | use acidic electrolyte |
| Applicable temperature range | 0 ~ 60℃ |
| Dimensions | The overall size of the unit is 140mm, with the upper tube measuring φ9.5*35mm and the lower tube measuring φ6*65mm. |
| Types | Mercury type, acid electrode; there are two kinds of single salt bridge and double salt bridge |
Mercury Oxide Electrode
| Features | Suitable for alkaline electrolytes |
| Applicable temperature range | 0 ~ 60℃ |
| Dimensions | The overall size of the unit is 140mm, with the upper tube measuring φ9.5*35mm and the lower tube measuring φ6*65mm. |
| Types | Mercury type, alkaline electrode; there are two kinds of single salt bridge and double salt bridge |
Silver Chloride Type 218
| Features | Suitable for long-term reactions |
| Applicable temperature range | 0 ~ 60℃ |
| Dimensions | The overall size of the unit is 145mm, the lower tube measuring φ9.2*120mm. Wiring is U-shaped blade |
| Types | The nature of the electrode is Ag/AgCI type, which can react unattended for a long time |
Silver Chloride Type 219
| Features | Suitable for long-term reactions |
| Applicable temperature range | 0 ~ 60℃ |
| Dimensions | The overall size of the unit is 145mm, the lower tube measuring φ9.2*120mm. Wiring is U-shaped blade |
| Types | The nature of the electrode is Ag/AgCI type, and the second liquid junction of the double junction type can be added on demand |
Sand core salt bridge
| Features | Protective electrode, easy to use |
| Applicable temperature range | 0 ~ 80℃ |
| Dimensions | Standard φ10*70mm, extended φ10*100mm |
| Types | The built-in sand core liquid junction is used to protect the electrode and reduce the liquid junction potential |
Lukin Capillary
| Features | Protective electrode, easy to use |
| Applicable temperature range | 0 ~ 80℃ |
| Dimensions | Standard φ10*70mm, extended φ10*100mm |
| Used to protect the electrode and reduce the liquid junction potential | |
Variable diameter sand core salt bridge
| Features | Protective electrode, easy to use |
| Applicable temperature range | 0 ~ 80℃ |
| Dimensions | φ12*70mm / φ6*70mm / φ6*100 |
| Used to protect the electrode and reduce the liquid junction potential | |
Straight Sand Core Salt Bridge
| Features | Protective electrode, easy to use |
| Applicable temperature range | 0 ~ 50℃ |
| Dimensions | φ6*80mm / φ10*80mm |
| The guard electrode reduces the liquid junction potential | |
Detail & Parts










Principle
The Calomel / Silver Chloride / Mercury Sulfate principle is based on the electrochemical reaction between calomel (Hg2Cl2) and silver chloride (AgCl) in the presence of mercury sulfate (HgSO4). When the calomel electrode is immersed in a solution containing chloride ions, the following reaction occurs:
Hg2Cl2(s) + 2e- → 2Hg(l) + 2Cl-(aq)
This reaction generates an electrical potential that is proportional to the concentration of chloride ions in the solution. The silver chloride electrode serves as a reference electrode with a stable and well-defined potential, providing a stable reference point for measuring the potential of the calomel electrode.
Applications
Calomel / Silver Chloride / Mercury Sulfate electrodes are widely used in electrochemistry, particularly in applications such as:
- Reference electrodes in electrochemical cells and potentiometric measurements
- Determination of redox potentials and electrochemical reactions
- Corrosion studies and electrochemical impedance spectroscopy
- Electroplating and electrorefining processes
- Monitoring and control of chemical processes in various industries
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FAQ
What Are The Advantages Of Using A Calomel Electrode?
What Are The Different Types Of Reference Electrodes Available?
When Should I Use A Calomel Electrode Instead Of An Ag/AgCl Electrode?
What Is An Electrode In Electrochemistry?
What Is Reference Electrode With An Example?
What Is The Function Of Auxiliary Electrode?
What Are The 3 Electrodes In Electrochemistry?
What Is The Role Of Reference Electrode?
What Is The Difference Between Auxiliary And Reference Electrode?
What Are The Different Types Of Electrochemical Electrodes?
What Is Reference Electrode Used For?
What Materials Are Commonly Used For Auxiliary Electrodes?
What Materials Are Commonly Used For Electrochemical Electrodes?
What Is A Reference Electrode Vs Counter Electrode?
What Is The Difference Between Standard And Reference Electrode?
How Do Auxiliary Electrodes Affect The Performance Of An Electrochemical Cell?
What Factors Should Be Considered When Selecting An Electrochemical Electrode?
Why Are Auxiliary Electrodes Necessary In Electrochemical Systems?
How Can Electrochemical Electrodes Be Used In Various Applications?
Are There Any Limitations Or Considerations When Using Auxiliary Electrodes?
Product Datasheet
Reference Electrode Calomel Silver Chloride Mercury Sulfate for Laboratory Use
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