SurPASS™ 3: A New Level of Surface Charge Analysis
The SurPASS 3 series features fully automated zeta potential analysis of macroscopic solids under real-life conditions. As electrokinetic analyzers, they employ the classic streaming potential and streaming current method for a direct analysis of the surface zeta potential. The zeta potential is related to the surface charge at a solid/liquid interface and is a key parameter for understanding surface properties and developing…
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Very robust machines that deliver.
Charge determination for surfaces
The set-up is easy to use and delivers good and reproducible results. I have been very happy with it. One issue that can be problematic is contamination. Cleaning the set-up can be very time-intensive. Be careful in particular with surfactants. The manufacturer has been very helpful in trying to solve such problems and only in cases where they did not have the problem themselves, they did not have a quick answer. But would always try to help. They are also very good in bringing people together. I am still happy with this and would certainly buy it again.
Review Date: 21 Jun 2021 | Anton Paar
Streaming Potential
This machine is working very well. Even on long-term it gives reliable results. We have been reproducing data for a long time. No problem. As soon as a specifically adsorbing chemical comes into the system, it can be difficult to remove it. We have had problems with injections of nano-particles or surfactants. We found them hard to remove and Anton Paar did not have a solution to that. Finally we managed to get rid of the contaminations but it costs a lot of time testing. Also using Bromide with the silver chloride electrodes was more of a problem than what Anton Paar thought. Overall this machine is very good value for the money invested.
Review Date: 12 Oct 2015 | Anton Paar
The SurPASS 3 series features fully automated zeta potential analysis of macroscopic solids under real-life conditions. As electrokinetic analyzers, they employ the classic streaming potential and streaming current method for a direct analysis of the surface zeta potential. The zeta potential is related to the surface charge at a solid/liquid interface and is a key parameter for understanding surface properties and developing new specialized materials.
- High-end electrokinetic analyzer for solid surface analysis
- Fully automated zeta potential analysis on macroscopic solids
- Automated detection of the isoelectric point
- Time-dependent recording of liquid-on-solid adsorption kinetics
Understanding Filter Efficiency – Virus Removal in Depth Filtration
Potable water production requires an efficient and cost-effective technology of drinking water treatment. Depth filters based on diatomaceous earth (DE) are widely used for bacteria removal. Bacteria are unable to penetrate the pores of a microporous DE filter, whereas the 10 times smaller viruses can easily pass the filter and harm the consumer. These contaminants can only be completely removed by electrostatic attraction of the virus on the filter pore surface. This application note demonstrates efficient virus removal using the SurPASS 3 system from Anton Paar.
Enhancement of Membrane Separation Performance
Surface modification of polymer membranes is required to adjust the properties of a base membrane polymer for various filtration applications (drinking and waste water treatment, seawater desalination, liquid/liquid separation). The zeta potential is sensitive to small changes in the surface chemistry and thus suitable for monitoring membrane performance. This application note demonstrates the real-time measurement of surface Zeta Potential using the SurPASS 3 system from Anton Paar.
Electrokinetic Analyzer for Solids
Watch this video to learn about the SurPASS electrokinetic analyzer used for surface charge analysis. It’s a versatile system able to investigate the zeta potential of macroscopic solids based on a streaming potential and streaming current measurement. Fully automated it can handle small or large samples from fibers to flat surfaces.
