General
Minimum volume	0,5 mL

The XV41-S7 is a pH indicator electrode from the manufacturer Chauvin Arnoux, designed for precise pH value measurements in laboratory and field applications. It features a robust PVC body that protects the electrode from mechanical stress and reduces breakage risks in case of impacts. The electrode is equipped with a spherical tip and has an S7 connector intended for connection with compatible measuring devices. The measurement is performed via a thin glass membrane that reacts to H+ ions in the sample and generates a voltage proportional to the hydrogen ion activity. This voltage is converted by the measuring device into a pH value. The XV41-S7 is designed as a separate measuring electrode, meaning it must always be combined with a reference electrode to form a complete measurement circuit. This system is particularly preferred when the service life of the measuring electrode is shorter than that of the reference electrode, for example, in aggressive or contaminating media.

Applications
The XV41-S7 is suitable for general pH measurements in a wide range of applications, particularly in the food industry and with semi-solid media. Due to its robust construction and PVC body, it is suitable for applications where mechanical stress or contact with aggressive substances is expected. The electrode is designed for measurements in the pH range of 0 to 12, enabling broad application in laboratory and process environments. The recommended minimum sample volume for measurement is 0.5 mL, making it suitable even for small sample quantities.

Functions and Equipment in Detail
The electrode features a universal glass, ensuring accurate measurements in the pH range up to 12. The glass membrane reacts sensitively to the concentration of hydronium ions in the solution. The PVC body protects the sensitive glass membrane and increases the mechanical stability of the electrode. The spherical tip provides an even contact surface with the sample and improves measurement accuracy. The electrode is equipped with an S7 connector, intended for connection with measuring devices featuring a corresponding plug system. The cable length is 1 meter, providing sufficient reach for most application scenarios.

Technology Explained Simply
In pH measurement, the potential difference between the measuring electrode (indicator electrode) and the reference electrode is recorded. The measuring electrode reacts to H+ ions in the sample and generates a voltage proportional to the hydrogen ion activity. The reference electrode provides a constant reference potential. The measuring device records the difference of these potentials in millivolts (mV) and converts it into a pH value. This configuration allows for flexible use, especially when the service lives of the two electrodes differ.

Compatibility and Accessories
The XV41-S7 is designed for use with reference electrodes of type BR41, BR42, XR41, or XR42, also offered by Chauvin Arnoux. These reference electrodes feature an Ag/AgCl reference system and a refillable KCl 1 mol/L electrolyte. Combining the electrode with a suitable reference electrode is essential to achieve a functional measurement circuit. The electrode is equipped with an S7 connector, intended for connection with measuring devices featuring a corresponding plug system. The cable length of 1 meter allows for flexible placement of the measuring device.

Mounting and Installation
The installation of the XV41-S7 is performed by directly connecting it to a compatible measuring device via the S7 connector. The electrode is immersed into the solution to be measured, ensuring sufficient immersion depth to enable reliable measurement. The recommended minimum sample volume is 0.5 mL, with the electrode fully immersed in the sample. The electrode is not suitable for use at temperatures below 0 °C or above 80 °C. The operating temperature range is between 0 and 80 °C.

Advantages in Operation
The XV41-S7 offers high mechanical robustness due to the PVC body, extending the electrode's service life in demanding environments. The spherical tip ensures an even contact surface with the sample and improves measurement accuracy. Using it as a separate measuring electrode enables cost-efficient maintenance, as only the measuring electrode needs to be replaced when worn, while the reference electrode can continue to be used. The electrode is suitable for use in the food industry and can also be used with semi-solid media. The cable length of 1 meter provides sufficient flexibility for most application scenarios.