Improved SHI111 silver-silver chloride reference electrode SHI112 Ag/AgCl reference electrode R0303
model:
More magnetic improvement SHI111
More magnetic improved HHI112 silver electrode
R0303 silver chloride electrode
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 liquid, the electrode 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 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.
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.
SHI111 silver silver chloride electrode: the diameter of the glass tube is 4mm, and the tetrafluoroethylene part is 6.4mm.
SHI112 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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R0303 silver silver chloride electrode: the diameter of the glass tube is 3.8mm, and the solution in the tetrafluoro part 3.8mm is KCL (3M potassium chloride solution).
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The difference between SHI111 and R0303: different sizes!
Product description remarks: The original SHI111 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)
SHI112 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. (However, organic solvents and specific additives cannot be added. It is best to consult the manufacturer to test different substances and add different solutions before purchasing)
SHI111 silver chloride electrode: The filling liquid in the glass tube is 3.0M potassium chloride
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 out the liquid in 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 3.8 mm, the length of the glass part is 5 cm, the diameter of the tetrafluoro part is 6 mm, and the length of the tetrafluoro part is 25 mm.
The wetted part of the product is made of porous ceramics, and each electrode will leak when the protective cap is removed. This is a normal phenomenon. You can add the electrode liquid after it leaks. If you don’t know the product quality problem, please don’t buy it. The 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, the 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.
Packing:1PC
Warranty period: 120 days
On May 15, 2023 at 01:05:15 PDT, seller added the following information: