General
Refillable

The BRAG1-S7 is a combined redox single-junction probe from the manufacturer Chauvin Arnoux, specifically designed for measuring redox potential (ORP) in liquids. It integrates both the measuring electrode and the reference electrode within a single glass housing, ensuring a compact and easy-to-handle design. The electrode is suitable for use in laboratories as well as in the field, enabling direct measurement of the redox potential of the solution into which it is immersed. The silver rod primarily serves for argentometric measurements and titrations, with the reference system based on mercury sulfate (Hg/Hg2SO4). The electrolyte is refillable and consists of a saturated potassium sulfate solution (K2SO4), which extends the electrode's lifespan and allows for cleaning or replacement of the electrolyte.

Applications
The BRAG1-S7 is used in various fields, particularly in analytical chemistry, the food industry, and environmental analysis. It is suitable for monitoring oxidation-reduction processes in aqueous solutions, for example, in drinking water quality control, wastewater treatment processes, or in the chemical industry. The combination of measuring and reference electrodes in a single housing reduces the number of required components and simplifies installation and maintenance.

Functions and Equipment in Detail
The electrode features a silver rod serving as the measuring electrode, optimized for argentometric measurements. The reference system is based on mercury sulfate (Hg/Hg2SO4), with the reference electrolyte consisting of a saturated potassium sulfate solution (K2SO4). The refillable design allows for electrolyte replacement, enhancing the electrode's functionality and lifespan. The electrode is equipped with an S7 connector, intended for connection to compatible measuring devices.

Technology Explained Simply
The BRAG1-S7 operates on the principle of a single-junction probe, where the measuring and reference electrodes are housed together in one unit. The measuring electrode responds to electron activity in the solution, while the reference electrode provides a constant reference potential. The potential difference is measured in millivolts (mV) and allows conclusions about the redox behavior of the solution. The refillable design with liquid electrolyte ensures long-term stability of the electrode and allows for easy replacement in case of contamination or electrolyte degradation.

Compatibility and Accessories
The electrode is equipped with an S7 connector, suitable for connection to corresponding measuring devices. As compatible accessories, a Pepsin/HCl solution (125 ml) is offered, which can be used for maintenance or calibration of the electrode. However, the exact use of this solution is not specified in the datasheet.

Mounting and Installation
Installation is performed by immersing the electrode into the liquid to be measured. The S7 connector is connected to the appropriate measuring device. The electrode is designed for operating temperatures from 0 to 80 °C. The cable length is 1 meter, providing sufficient reach for use in laboratories or in the field.

Advantages in Operation
The combination of measuring and reference electrodes in a single housing reduces the complexity of the measurement setup. The refillable design extends the lifespan and enables easy maintenance. The use of a silver rod makes the electrode particularly suitable for argentometric measurements and titrations. The S7 interface ensures a secure and reliable connection with compatible devices.