Buy Mercury Oxide Reference Electrode Hg/HgO Galss Rod φ6*70mm,Cheap Mercury Oxide Reference Electrode Hg/HgO Galss Rod φ6*70mm at Dekresearch India

Product Details

The mercury-mercury oxide（Hg/HgO） reference electrode is mainly used in alkaline solutions. It is an electrode composed of metallic mercury and its insoluble salt HgO and 1M KOH solution. Its electrode potential is 0.098V (25°C). The salt bridge of the Hg/HgO reference electrode is made of glass and PTFE, and the size is φ6*70mm. This size can be matched with various types of DekResearch electrochemical cells.

Special attention should be paid to maintenance and storage when using the Hg/HgO reference electrode. The substance containing mercury oxide is a toxic substance, and the salt bridge solution is corrosive. Please strictly abide by the relevant laboratory safety regulations for operation. The mercury oxide electrode made of glass is generally suitable for the weak alkaline electrolyte solution system. When the solution concentration is too high, it needs to be used with a long salt bridge. 1M KOH solution is also added to the salt bridge to prevent the strong corrosive electrolyte solution from corroding the glass and causing damage to the electrode.At the same time, the Hg/HgO reference electrode made of PTFE can also be used in the 3M or 6M strong alkali system, and the user can freely change the concentration of the filling liquid in the reference electrode according to yours needs, for example, 6M NaOH or 6M KOH , Instead of 1M KOH.

Specification:
tube diameter: 6 mm
effective length: 70 mm
liquid junction core: microporous ceramic filter core
filling solution: 1M KOH
potential stability: <5 mV
operating temperature: 0-40 deg C

Different research systems can choose different reference electrodes:
Neutral system------saturated calomel electrode or Ag/AgCl reference electrode
Alkaline system-----Hg/HgO reference electrode
Acidic system-------Hg/Hg2SO4 reference electrode
Non-aqueous system--Non aqueous Ag+ reference electrode

NOTICE：
1. Due to shipping safety considerations,all reference electrodes are not filled with solution.Before use,the user needs to prepare an internal solution to fill it into the electrode.
2. Reference electrodes always ship separately.Special shipping arrangements may be required to process your order if you purchase a reference electrode.
3. Additional fees may be applied to cover the costs of shipping the single junction mercury oxide reference electrode.This electrode also may not be available for sale in all countries.
4. Shipping standard: Each mercury oxide electrode is shipped after testing the potential difference.

Product Includes:
1 * Hg/HgO reference electrode with gold-plated pin
1 * cap
1 * fluorine rubber O-ring

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PRODUCT RELATED

How to choose ordinary electrochemical cell and sealed electrochemical cell?

Regardless of the user's tightness requirements for the actual test, the sealed electrochemical cell is the first choice. The sealed electrolytic cell is equipped with hollow sealing screws and fluorine rubber O-rings to install and seal the entire device, and then pass inert gas into the cell body to drive out the excess gas inside the cell body to realize the test of the system in an inert environment. If there is no requirement for tightness, no ventilation operation is required. However, if you choose an ordinary electrochemical cell, the related operations of the sealed electrolytic cell cannot be realized.

What volume of electrochemical cell is suitable to choose?

The volume of the electrolytic cell should be selected moderately. If the volume is too large, the amount of solution will be too much, which is unnecessary. During electrochemical measurement, the electrode surface undergoes oxidation and reduction reactions, and some substances in the solution are reduced by participating in the electrode reaction. At the same time, some reaction products will dissolve into the solution. If the volume of the electrolytic cell is too small, the solution concentration will change significantly during the long-term steady-state measurement, which will eventually affect the experimental results. In most cases, the volume of 50ml and 100ml are more choices.

How to choose a working electrode?

Common working electrodes include disk electrodes and replaceable electrode holders. The disk electrode is suitable as the base of the modified material, and it is modified to the base area of the disk electrode by mixing a membrane solution or the like with a powdered material. And if the material being studied is a sheet-like structure or the material can be modified to suitable materials such as conductive glass, carbon paper, carbon cloth, etc., it is more practical to choose a replaceable electrode clip.

How to choose a counter electrode?

One of the important parameters of the counter electrode is its surface area. The counter electrode must have a large enough area to support the current conduction generated on the working electrode. Generally, the area of the counter electrode is 3-5 times the area of the working electrode. When choosing a disk electrode as the working electrode, platinum wire electrode is a good choice. When choosing sheet materials as working electrodes, platinum wire ring electrodes and platinum sheet electrodes are good choices.

How to choose a reference electrode?

Generally speaking, calomel electrode or Ag/AgCl reference electrode is used in neutral system. Since the potential of calomel electrode changes greatly with temperature, when the temperature exceeds 70 degrees, it needs to be used with a salt bridge or replaced Use Ag/AgCl reference electrode. Hg2SO4 reference electrodes are generally suitable for sulfuric acid or sulfate systems. Hg/HgO reference electrodes are generally suitable for alkaline electrolyte solutions, of which the strong alkali system also needs to be used with a salt bridge, and the filling liquid in the salt bridge is consistent with the filling liquid of the reference electrode. The non-aqueous organic system needs to use a Ag/Ag+ reference electrode. When using a non-aqueous Ag/Ag+ reference electrode, the user needs to prepare a solution containing supporting electrolyte and silver ions (usually 10mM) and inject it into the reference electrode chamber. Due to shipping safety considerations, all reference electrodes are not filled with solution. Before use, the user needs to prepare an internal solution to fill it into the electrode.

Do you offer wholesale discounts?

Yes, We have regular promo activities for all our customers. We do offer discounts to our customers who buy in bulk. We are appreciated for your inquire through E-mail. service@dekresearch.com.

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