Interview: Nicole Zangl – Magnetic mixing technology

26. July 2023 by Andreas Pompenig Mixing Technology, Research & Development, ZETA News

Magnetic agitators for a variety of mixing tasks

At the TechCenter ZETA, the development of magnetic agitator technology is driven forward - always based on the requirements and needs of the customers. In the following interview, our expert Nicole Zangl provides an insight into the world of magnetic agitators. What are their special features and key advantages? And can they even score in terms of sustainability?

Significant advantage: Contamination risk minimized


ZETA relies on magnetic mixing technology for the stirring process in bioreactors. What are the advantages over conventional agitators?

Magnetic agitators are particularly suitable for aseptic processes. The driving force is transmitted contactlessly via magnetic fields. This means that no mechanical seal is required for the agitator shaft. The decisive advantage is that this greatly minimizes the risk of leakage and contamination.

At the TechCenter ZETA, the development of magnetic agitator technology is driven forward.

TechCenter ZETA in Lebring/Steiermark.
Significant advantage: Contamination risk minimized.

Research and development at ZETA.

Sustainability is a term that is currently on everyone's lips. What role does sustainability play in relation to mixing technology?

In aseptic processes, conventional agitators are often provided with a double mechanical seal. Pure steam condensate is frequently used for their lubrication. The energy required for steam production and condensation is substantial.With magnetic agitators, there is no need for this at all!

ZETA develops magnetic agitators for very large vessels and bioreactors. Their capacity is constantly increasing. In your estimation, where will the size go in the next few years?

The working volume varies between the different agitator types and agitating tasks. For bioreactors, 30,000 L and more are possible, for mixing vessels it reaches up to 100,000 L and beyond. With the further development of the technology, we can always open up new areas of application and use it for ever more complex stirring tasks in ever larger vessels.

Contact Nicole Zangl - Business Development Mixing Technology

With the further development of the technology, we can always open up new areas of application and use it for ever more complex stirring tasks in ever larger vessels.

BMRT, BMRF, AMR and AMRi technology - What do these terms stand for and what are the main differences between these agitators?

Basically, we distinguish between bottom-mounted and top-mounted magnetic agitators. BMRT are particularly suitable for stirring tasks like buffer or media preparations. BMRF are bottom-mounted magnetic agitators for bioreactors. The AMRi is a further development of the AMR top-mounted magnetic agitator, which enables new areas of application - even with an inclined agitator shaft.

Is there a product you are particularly proud of?

It's hard to say, I'm fascinated by all the further developments and solutions specially tailored to our customers. I would particularly highlight our implementations with the XXL magnetic couplings, which enable stirring processes in very large vessels. By now, we can implement these not only for bottom but also for top-mounted magnetic agitators.

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Contact Nicole Zangl - Business Development Mixing Technology
Contact: Nicole Zangl
Business Development Mixing Technology

Our expert is looking forward
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