Extech pH Electrodes Mini-Electrode.
Fits in a test tube! 10 x 120mm. GENERAL PURPOSE pH/REF ELECTRODES. Rugged, polymer construction for less breakage, with a glass pH sensing bulb surrounded by protective teeth. pH range is 0 to 14pH and temperature range is 0 to 80°C. High accuracy and fast response (95% in 5 seconds), 39" (1m) cable with BNC connection, and wetting cap or bottle to extend electrode life. Specially designed to keep the reference junction clog-free. All are Ag/AgCl gel-filled.