Features: This PH electrode is a high accuracy composite laboratory electrode with accurate measurement and wide measuringrange. Can be used for general water applications such as drinking, domestic and rainwater, aquariums, tanks, pond, pools, spas, etc. This PH meter BNC connector has excellent waterproof and field applicability, and can measure the PH value of various liquids. Comes with protective carrying case and protective cap, ensures safety of the bulb. The size of the PH probe sensor is 5.8in, simple and comfortable to install and use. 120cm or 200cm cable are avaliable. This probe can be used as a replacement part of the PH meter to replace the damaged originalpart and prolong the service life. It is sturdy and durable, economical and practical, fully meeting the needs of various industry tests, and suitable for various PHQ9 BNC plugs. Specifications: Material: ABS ORP MeasurementRange: 0-14PH Resolution: 0.01PH Accuracy: 0.01PH Operating Temperature: 0-50℃ Probe Diameter: Approx.1.2cm / 0.5in Electrode Length: Approx.14.8cm / 5.8in Connection: 50OHM How to Use: Suitable for various PHQ9 BNC plugs Size: 1.2meters/2meters Package Includes: 1x PH Probe Sensor note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.