ZPA – Zeta Potential Analyzer

Part Number: ZPA

The ZPA 20 is a compact, high-precision instrument that measures surface zeta potential of macroscopic solid samples—including fibers, powders, plate-shaped solids, ceramics, and tubes—within under one minute. It employs a patented bidirectional oscillating streaming potential method combined with a powerful stepping motor, offering fast, statistically stable results for adhesion, adsorption, and surface charge investigations, including isoelectric point determination.

                                                
                                                    Patented Bi‑Directional Oscillating Streaming Potential                                                
                                            
                                                Advanced method guarantees minimal electrode polarization and rapid high-quality zeta potential data .

                                                
                                                    Ultra-Fast Measurement in Under One Minute                                                
                                            
                                                Powered by a stepping motor (≤ 0.5 Hz oscillation), ZPA 20 delivers results with excellent reproducibility in less than a minute .

                                                
                                                    Multiple Probes for Comprehensive Analysis                                                
                                            
                                                Equipped with precision sensors for streaming voltage, current, conductivity, pH, pressure, and temperature—enabling full-process documentation .

                                                
                                                    Modular Cells for Diverse Sample Types                                                
                                            
                                                "Switchable cells include:

MC‑ZPA/PF for fibers, powders, granules

MC‑ZPA/S & K for plate solids

MC‑ZPA/HF1/HF3 for flexible/hollow fibers

MC‑ZPA/CM1 & CM2 for ceramic membranes (radial/axial) "

                                                
                                                    Automated Isoelectric Point & Adsorption Kinetics                                                
                                            
                                                Optional LDU 25 dosing unit enables pH titrations, real-time automation of IEP determination and surfactant kinetics analysis .

                                                
                                                    Intuitive Multilingual Software Interface                                                
                                            
                                                ZPA Software (Windows) supports guided single runs, titration projects, live plotting, automatic IEP calculation, and electrode gap calculation via Hagen–Poiseuille .

Specification	Value
Measurement Method	Patented bidirectional oscillating streaming potential
Typical Measurement Time	< 1 minute
Oscillation Frequency	Up to 0.5 Hz
Probes Included	Streaming voltage, current, conductivity, pH, pressure, temperature
Sample Types	Fibers, powders, granules, plate solids, flexible/hollow fibers, ceramic membranes
Measuring Cells	MC‑ZPA/PF, S, K, HF1, HF3, CM1, CM2
LDU Dosing Unit	Optional, supports up to 4 syringe modules; R1 or R2 packages available
Software	ZPA Software – touch/PC control; multilingual; live data & gap calc
Isoelectric & Titration	Auto IEP via dosing and measurement
Power & Size	Desktop lab unit (~26 cm cube; weight not specified)
Operating System	Windows-based with guided UI