Apera Instruments AI1301 pH Electrode (Gel, BNC Connector)

Features:

• The economical choice of a reliable combination pH Electrode/Sensor/Tester
• Apera's proprietary low-impedance lithium glass membrane
• Equipped with a detachable probe storage cap, keeping the sensor hydrated when not in use.
• Gel KCL electrolyte adopted; No need for refilling.
• Apera Instruments 201-C Combination pH Electrode is an economical choice for a reliable combination pH electrode, designed for general water solutions' pH measurement in scientific research, environmental monitoring, and quality control. 
• Not suitable for testing in low-ion concentration solutions (e.g.: deionized water or distilled water), strong base and strong acid solutions, highly corrosive liquid, or for continuous testing in high-temperature solutions.
• Compatible with any pH meters that use BNC connectors.
• Temperature sensor is not built-in. Users need to have a separate temperature probe to enable ATC or manually input temperature to complete temperature compensation.