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Home > Electrodes >Lengthened PTFE Replaceable Platinum Electrode Holder φ6*150mm

Lengthened PTFE replaceable platinum electrode holder φ6*150mm

SKU: EWJ114A150

Special Price £178.95

Regular Price: £222.95

Quotation

Description

• Fits all major brands of potentiostats
• This is a customized item, invalid for refund or exchange.
• Size: 10*15mm-φ6*150mm

The working electrode refers to an electrode that can cause significant changes in the concentration of the component to be tested in the test solution during the test. Common working electrodes include disk electrodes and replaceable electrode holders. Disk electrodes include glassy carbon electrodes, platinum disk electrodes, gold disk electrodes, silver disk electrodes, graphite electrodes, etc. Replaceable electrode holders include PTFE electrode holders, PEEK electrode holders, metal electrode holders, glassy carbon electrode holders, sample holders, etc.

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Product Details

A replaceable electrode holder is an auxiliary holder used to hold the sheet material as the working electrode. For example, FTO conductive glass, ITO conductive glass, glassy carbon sheet, conductive carbon paper, conductive carbon cloth, platinum sheet, foamed nickel, self-made sheet materials, etc.

PTFE electrode holder is a widely used replaceable electrode holder. Its insulated rod is customized with PTFE material, and the conductive substrate is made of 99.99% pure platinum sheet, which is corrosion-resistant, good in conductivity, and easy to replace the sample. At the same time, platinum sheets can also be replaced with metal sheet-like base materials such as gold sheets, titanium sheets, copper sheets, and stainless steel sheets, etc.

The area where the sheet material is pressed is about 5*10mm, and the exposed part is the actual reaction area of the material. According to actual needs, the chuck end can be higher than the electrolyte, or the entire chuck end can be immersed in the electrolyte.

In addition, when choosing this replaceable electrode holder to use with some electrochemical cells with small internal space, such as CHR221B, CHR221B1, CHR221B2, CHR221B3. It may occur that the screw screwed at the lower end of the electrode holder affects the insertion. According to the final effect of clamping the sample, the user can use a blade to cut the PTFE screw from both sides so that the electrode holder can be placed inside the electrochemical cell.

Specification:
platinum sheet size: 10*15*0.1mm
conductive copper rod: φ2*20 mm
body material: PTFE
body diameter: 6mm
body length: 150 mm
Collet diameter: 10mm
Collet length: 18 mm

NOTICE：

1.This is a customized item, we can't offer any refund or exchange. If you have any questions before purchasing, please feel free to communicate with us.

2.In order to maintain a good test, the thickness of the clamped sample is recommended to be less than 3mm.

3.As for the difference between several PTFE replaceable electrode holder, the PTFE replaceable electrode holder based on platinum sheet is the strongest. It is welded with thick platinum wire after being flattened. The titanium sheet, copper sheet or stainless steel sheet are all internally connected with the terminal and conductive metal sheet with silver wire and sealed with conductive adhesive. These PTFE electrode holders cannot withstand corrosive electrolyte and large voltage and current. 

Product Includes:
1 * platinum electrode clip with gold-plated pin
1 * fluorine rubber O-ring

References:

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PRODUCT RELATED

Q.
How to choose ordinary electrochemical cell and sealed electrochemical cell?
A.
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.
Q.
What volume of electrochemical cell is suitable to choose?
A.
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.
Q.
How to choose a working electrode?
A.
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.
Q.
How to choose a counter electrode?
A.
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.
Q.
How to choose a reference electrode?
A.
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.
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A.
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