Moveable Sleeve Junction - The PHE-11 pH Electrode/Probe is easy to clean, especially suitable for low ion concentration solutions. The infiltration rate of the electrolyte is determined by the tightness of the sleeve, which can be customized by users to ensure the best performance in every specific sample. Silver Ion Trap Reference System - The PHE-11 pH electrode uses a Silver Ion Trap reference system. On top of the Long-Life reference system, a silver ion trap is added to prevent the junction being blocked by silver sulfide. Unique Glass Membrane - The PHE-11 pH Electrode/Probe uses a Cylindrical glass membrane, which has faster response rate, better repeatability, and built tough - highly resistant to general impact. Patented pH/Temperature combination structure - The temperature element is placed in an independent cavity under the pH glass membrane. With the built-in heat-conducting medium, the temperature sensing speed can be increased by 40%, hence the response time and stability of the pH electrode are greatly improved. The electrode uses a BNC/RCA connector, compatible with all labForce® pH meters. This is a replacement electrode for the TS-W200 portable pH meter.