1. Silver chloride reference electrode-----corresponding use---neutral solution
2. Saturated calomel reference electrode---corresponding use---neutral solution
3. Mercurous sulfate reference electrode---corresponding use---acid solution
4. Mercury-mercury oxide reference electrode--corresponding use---alkaline solution

 

If calomel electrode or silver chloride electrode is used to test alkaline or acidic liquids, when the electrode is tested, it will exchange ion with the tested acidic or alkaline electrolyte. That is, the alkaline liquid or acid reverse osmosis into the electrode. .
The electrode is saturated with neutral potassium chloride liquid.
Once a certain amount of alkaline liquid or acidic liquid is infiltrated, the electrode will deteriorate and be easily damaged (some acidic alkaline liquids will also corrode the electrode tip material)
In the literature, the saturated calomel electrode is used to measure alkaline or acidic liquids. This statement is true, but the damage of the electrode is not considered. As far as the electrode itself is concerned, it is recommended to select the corresponding electrode to test the corresponding liquid.

 

***Precautions for use***

1. The electrode can be soaked in 3M potassium chloride solution for 1-2 hours before use. After use, the glass tube on the electrode can be unplugged, the glass tube can be ultrasonically cleaned and the liquid in the electrode can be replaced, which can prolong the service life of the electrode.

2. The product is not suitable for organic solvents. Organic solvents can be tested, but the electrodes are more likely to be damaged.

3. Preservation method: It can be stored at room temperature with a rubber cap to protect from light, or soaked in 3M potassium chloride at room temperature, protected from light.

 

CHI111 silver silver chloride electrode: the diameter of the glass tube is 4mm, and the tetrafluoroethylene part is 6.4mm.

CHI112 type non-mercury electrode non-aqueous Ag/Ag+ (silver/silver ion) reference electrode,

There is no solution in the electrode, you can choose the solution to add.

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Shanghai Yueci brand: R0303 type silver silver chloride electrode: the diameter of the glass tube is 3.8mm, and the inner solution of the tetrafluoroethylene part is 3.8mm is KCL (3M potassium chloride solution).

 

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The difference between CHI111 and R0303: different sizes! Different brands! Same performance!

Product description note: The original CHI111 type is a PTFE stopper at the bottom of the glass, which is easy to push out when adding liquid.

Now it is changed to a sintered ceramic sand core. (Better performance)

CHI112 silver ion electrode: non-mercury electrode, generally measuring non-aqueous solution, there is no solution in the electrode, you can choose the solution to add. (But do not add organic solvents, specific additives, it is best to consult the manufacturer to test different substances and add different solutions before buying)

 

CHI111 Silver Chloride Electrode: The filling liquid in the glass tube is 3.0M potassium chloride, the solution is installed. Can be used directly

 

Silver Chloride Electrode Tips for adding liquid: unplug the glass tube, first use a syringe to add liquid to the glass tube, then add liquid to the PTFE sleeve, and then insert the glass tube into the PTFE sleeve.

Reason: Because if there is no liquid in the PTFE cap, air will push the liquid out of the glass. When the PTFE is added, the glass is also added, and the excess liquid is squeezed out to balance.

 

Yue Magnetic R0303 has the same performance as 111 and is easier to disassemble than 111. After long-term sales to customers, the 111 glass tube is more difficult to disassemble.

 

R0303 electrode size: the diameter of the glass part is 3.8mm, the length of the glass part is 5 cm, the diameter of the tetrafluoro part is 6mm, and the length of the tetrafluoro part is 25mm.

 

The wetted part of the product is made of porous ceramics. Each electrode will leak when the protective cap is removed. This is a normal phenomenon. The electrode liquid can be added by itself. If customers who do not know think it is a product quality problem, please do not buy it. Product leakage belongs to normal phenomenon.

 

If calomel electrode or silver chloride electrode is used to test alkaline or acidic liquid, when the electrode is tested, it will exchange ion with the tested acid or alkaline electrolyte, that is, alkaline liquid or acid reverse osmosis into the electrode. .
The electrode is saturated with potassium chloride neutral liquid. Once a certain amount of alkaline liquid or acidic liquid is infiltrated,
The electrode deteriorates and is easily damaged.
In the literature, the saturated calomel electrode is used to measure alkaline or acidic liquids. This statement is true, but the damage of the electrode is not considered. As far as the electrode itself is concerned, it is recommended to select the corresponding electrode to test the corresponding liquid.
Mercurous sulfate test acid liquid, saturated calomel electrode, silver chloride electrode, neutral liquid test, mercury oxide electrode When measuring alkaline liquid, please select the corresponding electrode correctly, so as not to damage the electrode and affect the test data.