Apera Instruments LabSen 213 Glass 3-in-1 pH/Temp. Electrode for General Water Solutions in Scientific Research and Quality control, TRIS buffer compatible

Proprietary pH sensor technology and materials from Switzerland Unique LabSen blue hemispherical glass membrane –– fast response rate and impact-resistant Patented pH/Temperature combination structure, increasing the temperature response time by 40% compared to a conventional isolated built-in thermistor Say goodbye to air bubbles inside the bulb thanks to the Swiss blue inner gel solution Long-Life Reference System, improving the stability of the reference electrode and prolong the service life of the electrode