The Apera 201DJ-C Double-Junction pH Electrode features Apera's proprietary lithium glass membrane and double diaphragm structure. It is ideal for regular pH measurements in turbid water solutions, such as wastewater, swimming pools and spas, and for environmental monitoring, but is also suitable for general water solutions.

Its double diaphragm structure reduces the risk of junction clogs and extend the electrode's service life for long-term testing in turbid and complex water solutions.

Not suitable for measurements in solutions with low ion concentration (e.g.: deionized water or distilled water), strongly basic solutions (pH>12), highly corrosive liquids, or for long-term measurements in solutions with high temperature (> 60°C).

Compatible with all pH meters with BNC connectors. A temperature sensor is not installed. For automatic temperature compensation, a separate temperature probe is required. Alternativerly the temperature can be entered manually.

The electrode has a 6-month manufacturer's warranty.