Hangzhou Qiwei Instrument Co., Ltd. is one of the leading manufacturers and suppliers of ph flat 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 flat electrode in stock here from our factory. We also accept customized orders.
product key technologies

This pH flat electrode adopts an integrated structural design, which highly incorporates the glass sensing unit and the silver-silver chloride reference unit into one compact and well-proportioned assembly. It is an indispensable core sensing component for all types of acidity measuring instruments.
The core sensing tip is made of specialized pH-sensitive glass with sensitive hydrogen ion response, enabling it to rapidly detect subtle changes in the acid-base properties of water samples. Combined with a stable and reliable silver-silver chloride reference system, it maintains a constant reference potential with low drift, effectively avoiding measurement errors caused by environmental interference and ensuring outstanding test accuracy and repeatability.
Unlike conventional spherical or pointed electrodes, this electrode features a flat sensing surface. It is particularly suitable for direct pH measurement on flat surfaces, semi-solid media, micro liquid droplets, and moist surface samples, such as skin surfaces, agar culture media, paper, and gel samples. It perfectly solves the common problems of poor contact and insufficient sample volume encountered with ordinary electrodes. In addition, the flat structure leaves little residual sample and allows easy cleaning, effectively reducing cross-contamination risks.
Exquisitely manufactured with superior sealing and protection performance, the electrode features acid and alkali corrosion resistance, anti-aging capability and long service life. It adapts well to various working scenarios, including routine laboratory testing, production line online monitoring and field sampling. With the advantages of precise sensing, stable output, wide compatibility and user-friendly flat-head design, it fully meets the requirements for accurate pH detection of liquids and solid surfaces in chemical, environmental protection, food, pharmaceutical, teaching, scientific research and bio-detection industries. It is a cost-effective core supporting sensing component for liquid and semi-solid pH measurement applications.

Technical parameters
|
Model |
E-201-M |
|
|
Measuring range |
PH |
0~14 |
|
Measuring temperature |
℃ |
0~60 |
|
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 |
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