The BAG1-BNC is a redox indicator electrode from the manufacturer Chauvin Arnoux, specifically developed for measurements in the field of argentometric titrations and dosing. The electrode consists of a glass body, the lower end of which is fitted with a silver rod, and features a BNC connector as the interface. It serves as a measuring electrode that responds to changes in the redox potential of a sample and must therefore always be used in combination with a reference electrode (e.g. BR44) to enable accurate measurement of the oxidation or reduction capacity of the sample.

Applications
The electrode is particularly suitable for applications in laboratories and process measurement, where precise determination of redox potential is required. It is recommended for argentometric dosing, where silver ions serve as an indicator for the endpoint of titration. The use of a separate measuring electrode is advantageous when the service life of the measuring electrode is significantly shorter than that of the reference electrode, allowing for cost and maintenance optimization.

Functions and Equipment in Detail
The BAG1-BNC is an indicator electrode consisting of a glass rod with an integrated silver rod. The silver rod reacts to the concentration of silver ions in the sample, which is utilized in argentometric measurements to determine the endpoint. The BNC connector enables a secure and standardized connection to measuring instruments that support this interface. The electrode is not suitable for pH measurements, but exclusively designed for redox measurements.

Technology Explained Simply
Redox measurements determine the oxidation-reduction potential (ORP) of a solution, i.e. its ability to accept or release electrons. The measuring electrode (here BAG1-BNC) provides a signal proportional to the electron activity in the sample. This signal is measured in millivolts (mV) and evaluated in relation to a constant reference voltage from the reference electrode. The combination of measuring electrode and reference electrode enables precise and reproducible measurement. The silver surface of the electrode is inert and reacts specifically to silver ions, making it particularly suitable for argentometric applications.

Compatibility and Accessories
The electrode is designed for use with reference electrodes of type BR44. The connection is made via the BNC connector, which is compatible with many measuring instruments. The electrode is not designed for pH measurements, but exclusively for redox measurements.

Mounting and Installation
Installation is carried out by immersing the electrode into the sample to be measured. The BNC connector is connected to the measuring device. No special mounting aids or tools are required. The electrode is suitable for use in laboratory environments and process plants, with an operating temperature up to 80 °C.

Advantages in Operation
The use of a separate measuring electrode such as the BAG1-BNC allows for targeted maintenance and replaceability, especially when the service life of the measuring electrode is shorter than that of the reference electrode. The silver surface offers high chemical stability and specific reaction to silver ions, increasing accuracy in argentometric titrations. The BNC connection ensures a reliable electrical connection to measuring instruments.