HF405-60 Shangtai PH electrode, Suntex, PH probe HF405-60

HF405-60 Shangtai PH electrode, Suntex, PH probe HF405-60

List of commonly used products of Taiwan, China Shangtai:
PH Series: Online PH Meter PC-350, Online PH Meter PC-3110, Online PH Controller PC-3100, PH Controller PC-310, PC-320 Online Controller, etc.
Portable series SP-2300PH analyzer,
SP2500 acidity ion concentration analyzer, Shangtai TS-100, Shangtai TS-130, etc.
Conductivity series: EC-410 conductivity meter, online conductivity controller EC-430, EC-4100 microcomputer conductivity controller, EC-4110 online conductivity meter, SC-110 portable conductivity meter, SC-2300 laboratory desktop conductivity tester, etc.

Shangtai PH electrode HF405-60 HF405-60-P-PA/120 anti HF acid PH electrode
Application: pH electrode resistant to hydrofluoric acid, suitable for pH measurement in water containing hydrofluoric acid, such as semiconductor and steel industry wastewater
Specifications:
P H range: 1-11PH
Pressure resistance range: atmospheric pressure
Temperature range: 0-80 ℃
Applicable protective devices:
Immersion electrode protection device with a length of 0.5-3 meters

HF405-60 Shangtai PH electrode, Suntex, PH probe HF405-60

Maintenance and upkeep of pH meter:

maintenance
1. Storage of pH glass electrode
Short term: stored in a buffer solution with pH=4;
Long term: stored in a buffer solution with pH=7.
2. Cleaning of pH glass electrode
The contamination of glass electrode bubbles may prolong the electrode response time. Use CCl4 or soap solution to wipe away dirt, then immerse in distilled water for one day and night before continuing to use. When pollution is severe, soak in 5% HF solution for 10-20 minutes, rinse immediately with water, and then immerse in 0.1N HCl solution for one day and night before continuing to use.
3. Treatment of aging of glass electrodes
The aging of glass electrodes is related to the gradual changes in the adhesive layer structure. The old electrode has a slow response, high membrane resistance, and low slope. Etching off the outer layer of the adhesive layer with hydrofluoric acid can often improve electrode performance. If this method can be used to regularly remove the inner and outer adhesive layers, the lifespan of the electrode is almost infinite.
4. Storage of reference electrode
The storage solution of silver chloride electrode is a saturated solution, and a high concentration solution can prevent silver chloride from precipitating at the liquid interface and maintain the liquid interface in a working state. This method is also applicable to the storage of composite electrodes.
5. Regeneration of reference electrode
Most of the problems with the reference electrode are caused by blockage of the liquid interface, which can be solved by the following methods:
(1) Soaking solution interface: Heat a mixture of 10% saturated solution and 90% distilled water to 60-70 ℃, immerse the electrode in about 5cm, and soak for 20 minutes to 1 hour. This method can dissolve the crystallization of the de electrified part.
(2) Ammonia immersion: When the liquid interface is blocked by silver chloride, concentrated ammonia water can be used for immersion. The specific method is to fill and clean the electrode, drain the liquid, and immerse it in ammonia water for 10-20 minutes, but do not let the ammonia water enter the inside of the electrode. Remove the electrode and wash it with distilled water. Add the filling solution again and continue to use.
(3) Vacuum method: Cover the reference electrode liquid junction with a hose, use a water flow suction pump to suction the partially filled liquid through the liquid junction, and remove mechanical blockages.
(4) Boiling liquid interface: The liquid interface of the silver silver chloride reference electrode is immersed in boiling water for 10-20 seconds. Note that the electrode should be cooled to room temperature before the next boiling.
(5) When the above methods are ineffective, mechanical methods such as sandpaper grinding can be used to remove blockages. This method may cause the ground sand particles to be inserted into the liquid interface. Causing sexual blockage.
maintenance

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