Proprietary pH sensor technology and materials from Switzerland No more slurry making. The integrated temperature sensor is connected with an RCA connector (Cinch) and is not compatible with all measuring devices of other manufacturers. The LabSen 553 is the replacement electrode for the Apera Instruments PH850-SL and PH8500-SL portable pH meters. This electrode has a 6-month manufacturer's warranty Long-Life Reference System - The LabSen 553 pH electrode adopts a long-life reference system, which is composed of a glass tube, AgCl and a reference silver wire. Spear Electrode/Sensor/Tester is designed for testing soil directly (This is a replacement probe for Apera PH850-SL, PH9500-SL). PH850-SA - pH Portable Meter Kit for Strong Alkaline and/or High APERA INSTRUMENTS LABSEN843 USER MANUAL Pdf Download | ManualsLib Polymer Electrolyte - The solid polymer electrolyte makes the electrode hard to be contaminated and maintenance-free. Special Glass Membrane - The LabSen 553 pH electrode adopts a spear sensor tip, which is ideal for directly testing semi-solid samples like soil. Pom housing, ideal for use in harsh environments Apera Instruments PH Probe 201T-F 3-in-1 PH/Temp. Electrode/Tester/Sensor For Regular Water Ph Test Direct Soil Testing Probe Polymer electrolyte - not more clogged junction
