World Precision Instruments Dri-Ref Reference Electrode, 4.7 Mm

World Precision Instruments - Low electrolyte leakage, stable potential with low resistance dri-ref™ reference electrodes were developed by wpi to have extremely low electrolyte leak­age properties, hence the name “dri-ref.” in addition to this key feature, these electrodes exhibit stable and reproducible potential and low resistance. Stored in kcl when not in use, they have a long life expectancy. - WPI (Additional S&H Or Hazmat Fees May Apply)