GRT1110C pH electrode is specially designed for online detection of pure water. The gel electrolyte is not needed to be mended, the anti fouling junction is not easy to be blocked, and it can also prevent the erosion of toxic ions. It is simple and durable to operate, and can easily solve various pain points of pure water monitoring. Reduced the problems of electrode blockage, poisoning during use, frequent electrolyte addition, and time-consuming and laborious maintenance!
★★★★★
Features
Specifications
| Parameter | Value |
|---|---|
| pH Range | 0-14 |
| Temperature Range | 0-60℃ |
| Pressure Range | 0-0.3 M Pa |
| Zero potential | 7±0.5 |
| Theoretical percentage slope | ≥ 95 |
Core product advantages
No electrolyte supplement: gel electrolyte is pre charged in place at one time, and no additional supplement is needed throughout the use, which is convenient and worry free
Anti blocking and anti pollution: The circular polytetrafluoroethylene interface has a smooth surface without impurities, and it is not easy to block even after long-term online testing
Not afraid of ion poisoning: Special salt bridge design can block “troublemaking ions” such as S ² ⁻ and CN ⁻, avoiding electrode failure
Fast and stable response: The electrode has low internal resistance and can quickly respond to changes in water quality. The measured data is also reliable
Easy to install: standard PG13.5 thread, can be directly installed on pipelines, can also be equipped with protective sleeves, and can be connected to most acidity meters
Ideal Application Scenarios
- Pure water online detection: Whether it is industrial pure water preparation, ultra pure water in the electronics industry, or purified water in the pharmaceutical industry, it can stably monitor the pH value and adapt to continuous online use needs;
- Laboratory pure water testing: can be used with a laboratory acidity meter, easy to operate, does not require frequent maintenance, suitable for batch water samples or long-term monitoring;
- Pure water containing trace toxic ions: If pure water contains trace amounts of S ² ⁻, CN ⁻ ions, it can also be used with confidence. Salt bridges will isolate these ions to protect the electrode;
- Conventional water quality monitoring: In addition to pure water, it can also be used for pH measurement of other conventional water quality, compatible with various acidity meters, and has a wide range of applications.

Usage and Maintenance Guide
Installation key points
- Open box inspection: Confirm that there is no mechanical damage to the sensitive bulb and electrode body. If there are bubbles in the bulb, gently shake it vertically to remove them;
- Interface installation: PG13.5 threaded interface is used, matched with corresponding protective sleeve or cable head, and pipeline installation method can be selected to ensure stable fixation;
- Stripping specification: Peel off the metal wire layer, thoroughly remove the conductive black skin of the transparent central axis, and avoid signal interference;
- Waterproof protection: If the electrode wire connection is not waterproof, it needs to be sealed with sealant, heat shrink tubing, or waterproof joints to prevent moisture;
- Connector adaptation: Depending on the type of acidity meter interface, choose BNC standard connectors or pin type terminal blocks for docking to ensure good contact.
Maintain
- Daily cleaning: Rinse the electrode with distilled water before and after measurement, dry the filter paper to prevent impurities from entering the measured liquid; Clean thoroughly once a week to ensure performance;
- Idle storage: After washing, put on a protective cover containing 3.3mol/L KCL solution and store in a dry and ventilated place to prevent sensitive bubbles from drying out;
- Sediment treatment: When the glass film appears semi transparent or deposited, wash it with dilute hydrochloric acid and then rinse it with distilled water to avoid scratching with a hard brush;
- Calibration cycle: It is recommended to calibrate the instrument once a week to ensure measurement accuracy;
- Taboo: Avoid prolonged immersion in distilled water, protein solutions, or acidic chloride solutions, and do not come into contact with organic silicone oils.
Sensor diagram illustration

- After opening the packaging, check whether there is mechanical damage to the sensitive bulb and sensor body of the electrode;
- Remove the sensor protective cover and check if there are any bubbles in the sensitive bulb of the sensor. If so, gently shake the sensor in a vertical plane to remove the bubbles;
- Select the corresponding sensor sleeve or cable head for installation according to different sensors;
- The connection between the sensor wire and the sensor is not waterproof, please make sure to do a good job of waterproofing.
Wire stripping instructions

Attention
- The outer layer of the transparent central axis is covered with a conductive rubber layer and a metal mesh layer. When stripping, first strip the metal mesh layer into the metal mesh as shown in the picture, and be sure to removal of conductive black skin on the transparent central axis;
- The cable extends to the host without any contact points except for a dedicated junction box.
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Measuring the pH value of pure water, as shown in the graph, is precise, worry free, and requires minimal maintenance! The GRT1110C pH electrode perfectly meets these needs, without the need for electrolyte replenishment, without fear of blockage or poisoning. It is easy to install and can adapt to most equipment, whether it is industrial pure water preparation or laboratory pure water monitoring, it can easily handle them. Normal use can last up to six months, and with proper maintenance, it can last even longer. The cost-effectiveness is extremely high.
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