Apera Instruments AI3101 LabSen 211 Professional Glass Combination pH Electrode for regular water solutions in scientific research and quality control, TRIS buffer compatible, BNC Connector

Backed by proprietary Swiss sensor technology and materials, the Apera LabSen 211 Combination pH Electrode is ideal for precise regular water solutions pH measurement in scientific research and quality control. This electrode is compatible with TRIS buffer solutions. LabSen unique blue hemispherical glass membrane – faster response time, better repeatability, and built tough, highly resistant to general impact (totally differentiates from the traditional fragile glass bulb membrane); and can be tested in high temperature samples (up to 225˚F). The LabSen 211 pH electrode adopts a Long-Life Reference System, which is composed of a glass tube, AgCl and a reference silver wire. The top end of the slim glass tube is stuffed with cotton, which prevents the reaction between AgCl and electrolyte when temperature changes. It improves the stability of reference electrode and prolong the service life of the electrode. Housing Material: Lead-free glass; Temp. Sensor: No; Junction: Ceramic; Reference: Long-Life; Electrolyte: 3M KCL; Length: 120mm; Diameter: 12mm; Membrane Shape: hemispherical; Range: 0-14 pH; Temp. Range: -5 to 100˚C (23 to 212˚F); Connector: BNC; Cable: 3 Ft The electrode uses a BNC connector, compatible with any pH meters that use BNC connectors. Temperature sensor is not built-in. Users need to have a separate temperature probe (ex: Apera MP500) to enable ATC or manually input temperature to realize temperature compensation. The electrode is backed up with a 6-month warranty fulfilled byApera Instruments.