The Apera Instruments 201-C pH electrode is designed for accurate measurements in a variety of common water solutions, making it an excellent choice for scientific research, environmental engineering, and quality control applications.
- High-quality pH glass electrode for reliable performance
- Removable storage cap to maintain moisture
- KCl gel electrolyte eliminates the need for refilling
- Not recommended for use in low-concentration solutions (such as de-ionized or distilled water), strongly alkaline solutions (pH > 12), highly corrosive liquids, or for prolonged measurements at temperatures above 60°C.
This electrode is compatible with all pH meters featuring a BNC connection and does not include a temperature sensor. For automatic temperature compensation (ATC), a separate temperature sensor or manual temperature input is required.
The electrode comes with a 6-month manufacturer’s warranty.





