Hangzhou Qiwei Instrument Co., Ltd. is one of the leading manufacturers and suppliers of ph glass composite electrode in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale bulk ph glass composite electrode in stock here from our factory. We also accept customized orders.
product key technologies
This pH glass composite electrode integrates a pH-sensitive glass electrode and a silver-silver chloride reference electrode into one unit, serving as the core sensing accessory for acidity testing instruments.
It can accurately sense the acid-base changes of various aqueous solutions and collect real-time pH parameter signals of water samples. Compatible with conventional pH measuring devices, it is suitable for precise pH measurement in scenarios such as laboratory analysis and water quality monitoring.
Technical parameters
|
Model |
95-1 |
|
|
Measuring range |
PH |
0~14 |
|
Measuring temperature |
℃ |
0~80 |
|
Zero |
PH |
7±0.5 |
|
Alkalinity error |
mV |
<15 |
|
PTS |
/ |
>98 |
|
Response time |
min |
<2 |
|
Internal resistance |
MΩ |
<250 |
|
Repeatability |
/ |
<0.017 |
|
Noise |
mV |
<0.5 |
Precaution
- When the electrode is used for the first time or is reactivated after being unused for a long time, immerse the electrode bulb and sand core in the 3NKCl solution for activation for 8 hours.
- The pH glass composite electrode plug should be kept clean and dry.
- The external reference solution of the electrode is 3NKCl solution.
- During the measurement process, it is necessary to prevent cross-contamination between solutions to avoid affecting the measurement accuracy.
- If the electrode bulb or sand core becomes contaminated, the PTS value will decrease and the response will slow down. Therefore, after measuring the flow rate, the electrode performance should be restored by cleaning it with a solution suitable for the nature of the measured contaminant.
- The pH glass composite electrodes should be prevented from being immersed in acidic fluoride solutions for an extended period of time.
- When using the pH glass composite electrodes, the rubber bands covering the ceramic sand core and the liquid addition port should be removed to ensure that the salt bridge solution maintains a certain flow rate, and then the electrodes can be used.
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