The 201-C pH electrode is ideal for measurements in all common water solutions in the field of scientific research, environmental technology and quality control. Not suitable for measurements in low-concentration solutions (e.g. de-ionized or distilled water), strongly basic solutions (pH > 12), highly corrosive liquids or for long-term measurements at high temperatures (> 60 °C). Compatible with all pH meters with BNC connector. The electrode has a 6-month manufacturer's warranty.