Measure dispersion-liquid’s pH during particle sizing
This company has developed a way to measure the pH value of the dispersion liquid almost directly in the particle-sizing measuring unit. The new pH sensor is installed as a module in the dispersion bath and connected to the laser particle sizer. It continuously measures the pH value during the measurement and automatically transfers the determined values to the software for documentation. This method covers fluctuations much more effectively than the zeta potential and offers many advantages. Monitoring the pH provides valuable information about how and when a chemically inert material, for example, reacts to alkalis, depending on the environment. If the curve is unstable and varies during measurement, the pH value helps with stabilization and interpretation. The detection of agglomeration or aggregation is also said to be much easier. — Fritsch GmbH, Idar-Oberstein, Germany