Mettler Toledo InLab 408: a precision pH electrode for demanding applications
The InLab® 408 from Mettler Toledo is part of a series of high-quality glass electrodes designed for laboratory applications requiring increased precision in pH measurement. Thanks to its careful design and high-quality materials, this electrode is an ideal choice for researchers, quality control laboratories and academic environments. Its reliability and durability are the result of proven expertise in the field of electrochemical measurement.
One of the key features of the InLab 408 is its ARGENTHAL™ reference system with a silver ion trap. This system eliminates silver ion contamination of the diaphragm, a recurring problem in media containing proteins or sulphides. Thanks to this innovation, the electrode maintains exceptional potential stability and a long service life, even under difficult conditions. The electrolyte used, a 3 mol/L KCl solution, complies with industry standards and ensures the consistency of the reference junction.
The HA glass membrane, designed for alkaline conditions and high temperatures, is one of the strengths of this electrode. Its low resistance (< 600 MΩ) allows for a fast and accurate response, even during significant temperature variations. In addition, the integrated temperature sensor (NTC 30 kΩ) ensures automatic temperature compensation, which is essential for obtaining reliable pH values. The combination of these features allows the InLab 408 to adapt to a wide range of samples, including those with high conductivity or high alkalinity.
In terms of design, the InLab 408 has a glass body that is 120 mm long and 12 mm in diameter, making it easy to handle and insert into different types of containers. It is equipped with a DIN 19262 connector on a 1.2-metre cable, compatible with METTLER TOLEDO instruments and many other brands. This standardised format makes it a practical and universal solution for existing measurement installations.
In addition to its technical performance, the InLab 408 is a model renowned for its robustness in laboratory environments. Its uncompromising design reduces maintenance and premature electrode replacement.
Whether for routine measurements or complex analytical applications, the InLab 408 from Mettler Toledo stands out for its accuracy, durability and adaptability. It is a strategic choice for anyone looking for reliable and reproducible pH measurements in demanding environments.
