The Unitrode with Pt1000 electrode: precision, robustness and versatility for demanding pH measurements
The Metrohm Unitrode with Pt1000 is a state-of-the-art combination electrode designed to meet the specific needs of laboratories performing pH measurements under complex conditions. Thanks to its ingenious design incorporating a Pt1000 temperature sensor, it provides automatic temperature compensation, ensuring accurate and reproducible results under all experimental conditions. It is particularly suitable for difficult samples, whether viscous, alkaline or subject to high temperatures. This type of matrix, which often compromises the performance of conventional electrodes, is mastered here thanks to the fixed glass joint diaphragm, renowned for its resistance to fouling and contamination. This robustness also allows long-term measurements to be carried out without any significant degradation in analytical performance.
The electrode uses a potassium chloride (KCl) reference electrolyte at a concentration of 3 mol/L, which promotes a stable electrode response even in the presence of significant ion gradients. For high-temperature applications above 80 °C, the standard electrolyte can be replaced with Idrolyte, a solution developed specifically for these extreme conditions. This adaptability makes Unitrode an ideal choice for research laboratories and the chemical, pharmaceutical and food industries, where analysis conditions vary greatly.
Its interface via a U-type plug-in connection head ensures direct compatibility with Metrohm instruments, facilitating integration into automated or semi-automated titration systems. In addition, the range of accessories available, such as connection cables of various lengths, electrolyte solutions and maintenance kits, allows for optimal maintenance of the electrode, ensuring a long service life and continuous measurement reliability.
Combining mechanical robustness, electrochemical stability and ease of maintenance, the Unitrode stands out as an essential measuring tool for demanding analytical environments.
