ionode is a manufacturer of pH Redox and Ion Selective electrodes. Our sensors are used in many types of analyses, including: environmental, industrial, mining, food(e.g. meat, cheese, wine, etc), clinical, hydroponics, swimming pool and spa applications. Our Intermediate Junction (IJ) reference electrode is a unique system providing remarkable versatility and durability. More information about the IJ can be found on the Intermediate Junction page. You can view the complete line of ionode electrodes in the Product Line page. If you are interested in using ionode electrodes on an OEM basis for your meters or controllers, or in becoming a Distributor of ionode products, click the appropriate links. If you are interested in learning about pH and redox theory or have a technical question regarding potentiometric sensors, click on the Technical link. ionode also contributes toward research and development of other analytical instrumentation for the chemical industry, which you can learn more about in the ionode Research link.