Zeta Potential Analyzer ZPA 20

ZPA 20 – Precision Zeta Potential Analyzer for Solid Surface Analysis

The ZPA 20 by DataPhysics Instruments is a state-of-the-art zeta potential analyzer engineered for the precise measurement of surface charge on solid materials, including powders, granulates, fibers, and flat solids. Leveraging a patented bidirectional oscillating streaming potential technique, the ZPA 20 offers unmatched accuracy and speed—producing highly reliable results in less than one minute.

Designed with flexibility in mind, the ZPA 20 is compatible with a wide range of interchangeable measuring cells, making it suitable for diverse sample types. This versatility is crucial for research in surface science, material development, and industrial quality control.

The instrument features an integrated monitoring system that continuously tracks conductivity, pH, temperature, and pressure during measurements. This allows for comprehensive, real-time analysis and ensures the highest data quality. With the optional LDU 25 liquid dosing unit, users can perform automatic pH adjustments for detailed studies such as isoelectric point determination and adsorption behavior.

Control and data visualization are handled through the intuitive ZPASoftware, which supports multilingual operation and includes built-in functions for automated titrations and graphical evaluations.

With robust performance, fast processing, and exceptional measurement precision, the ZPA 20 stands out as an essential tool for laboratories needing reliable surface charge analysis across various solid materials.

The Zeta Potential Analyzer ZPA 20 uses the patented bidirectional oscillating streaming potential analysis to measure the zeta potential of fibres, powders and plate shaped solid materials. Applications that depend on the adhesion between solids, the adsorption and chemical reaction of ions/molecules, surfactants, polymers etc. can all benefit from investigating the zeta potential and its changes depending on the pH value. The Zeta Potential Analyzer ZPA 20 is a compact measuring instruments that utilises the patented bidirectional oscillating streaming potential method. It is designed to measure the zeta potential of various macroscopic solid samples with highest accuracy and within shortest time. The ZPA 20 uses removable measuring cells for various types of materials. Hence, plate shaped samples as well as fibres and powders can be easily prepared and placed into the system. A consistent packing density of powders and fibres can be ensured using a torque wrench. The ZPA 20 features high precision measuring probes for voltage, current, conductivity, pH value, pressure and temperature. With its powerful stepping motor the ZPA 20 can create an oscillating flow of the electrolyte with frequencies of up to 0.5 Hz and hence, the zeta potential can be measured in under a minute with a high statistical quality and across a multitude of applied pressures.

Features of Zeta Potential Analyzer ZPA 20

• patented bidirectional oscillating streaming potential method.
• powerful stepping motor for oscillation frequencies of up to 0.5 Hz.
• measuring probes for voltage, current, conductivity, pH value, pressure and temperature.
• measuring duration for a single zeta potential typically under 1 minute.
• Optional Liquid Dosing Unit LDU 25 for automated pH value changes.
• Measuring cells for fibres, powder & granulate materials or for plate shaped solid materials.