ZPA 20
The Zeta Potential Analyzer ZPA 20 utilises the patented bidirectional oscillating streaming potential method for the measurement of zeta potential of various materials with a high degree of accuracy and precision. Samples with plate shaped geometries, fibres and powders can be easily prepared and measured as well. High precision measuring probes for voltage, current, conductivity, pH value, pressure and temperature are also possible with the system.
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FEATURES
APPLICATIONS
FEATURES
- Based on patented bidirectional oscillating streaming potential approach
- Oscillation frequencies of up to 0.5 Hz with use of high performance stepper-motor device
- Measuring probes for current, voltage, pressure, conductivity, pH value and temperature are possible
- Fast measurement time typically under 1 min for a single zeta potential test
- For automated different pH measurements, optional liquid dosing unit can be added on
- Different measuring cells for powders, fibres, plate shaped solid samples & granulate materials available for diverse sample types
APPLICATIONS
Food technology
- membrane filtration: characterisation and quality control of membranes for selective fractionation.
- particle interaction in food formulations: study of stability and interaction depending on the pH value.particle interaction in food formulations: study of stability and interaction depending on the pH value.
- antimicrobial surfaces: optimisation of surfaces used in food packaging and food processing for preventing the adsorption of microorganisms.
Filtration membranes
- virus filtration: modification of the surface charge of filter media for improving performance in filtering water from viruses.
- seawater salt removal: study of interaction between seawater components and filtration membranes by time dependent ζ potential analysis.
- membrane fouling: fouling processes can be identified by time dependent ζ potential analysis in order to increase the membrane efficiency.
Biocompatible material
- dental implants: investigation of adsorption of proteins on the implants surface in order to characterise the formation of biofilms.
- tissue engineering: modification of polymer surfaces to improve cytoadhering.
- dialysis membranes: modification of the filtration fibres to increase biocompatibility.
- contact lenses: reduction of biofilms and adhesion of bacteria on the lens surface as well as study of long-term stability and biocompatibility.
Textile industry
- textile washing: determination of the interfacial kinetic between surface active agents and textile materials
ZETA POTENTIAL ANALYZER
ZETA POTENTIAL ANALYZER