Based in Switzerland with clients around the world, MPI offers products, R&D services and consultancy in high power ultrasonics, a range of top quality ultrasonic cleaning and sonochemistry equipment and special equipment development for new applications. Learn more about the company here.

NEW! Ultrasonic systems for the most demanding applications: "MMM Technology" (Multifrequency, Multimode, Modulated Sonic & Ultrasonic Vibrations) gives the best possible results in ultrasonic cleaning and sonochemistry systems as well as making many new applications possible (***MORE***). For the first time any complex mechanical system up to a mass of several tonnes, consisting of arbitrary resonating elements, can be driven efficiently (Learn more about MMM Power Supplies)

Featured Application: Metal casting with Ultrasonic Degassing and Grain-refinement

New photos and published papers showing the benefits of casting molten aluminium with ultrasonic degassing.

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Please see also this video of fluid rotation by ultrasonics - another effect in metal processing in addition to degassing, homogenization, crystallization, grain refining. Here water and coffee particles are used to demonstrate the effect in the lab, but in reality liquid metal also rotates during processing.

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Featured Application: Ultrasonic Plastic Extrusion

Our patented MMM ultrasonic generators have the unique ability to apply high power ultrasonic energy to large mechanical systems like extruder heads...

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MORE about MMM ultrasonics on pdf

Our tube reactors, also based on MMM Technology, are ideal for all through-flow sonochemistry applications providing high intensity, uniform sonication under your complete control. Various sizes available.	Our revolutionary clamp-on ultrasonic systems drive your existing pipes, reactors or pressure vessels, even glass tubes and vessels - with the versatility of MMM ultrasonics.	Ultrasonic systems for the most demanding applications: "MMM Technology" (Multifrequency, Multimode, Modulated Sonic & Ultrasonic Vibrations). Details pages for ultrasonic generators: OF series, OW series, IX series, controllers. MMM ultrasonics manuals on pdf.
An unusual application for ultrasonics - atomization of molten metal alloy. The sonotrode uses a special tip (which is different for atomizing different metals) and water cooling. More information.	Foil immersed for only a few seconds in a benchtop ultrasonic reactor powered by MMM technology. The extent and uniformity of the perforation cannot be matched by any conventional ultrasonic system. The details page includes a small animation and the complete video clip is available for download on our download site.	For high-energy ultrasonic cleaning and sonoreactors, if MMM technology is not required, we also offer this range of top-quality "Push-Pull" transducers (tube resonators), driven by modular generators to suit all power requirements.
We have developed equipment for major manufacturing companies in Switzerland and around the world. Here are some examples:
This is a short video of our prototype ultrasonic compaction unit for reducing the volume of powders in the pharmaceutic industry. (File size 1.5Mb. You may need to download the file first - Right click, "Save target as" and / or download Apple Quicktime).	Another application of MMM Technology - prototype equipment for proving a process of ultrasonic cleaning in supercritical liquid CO2 (more).	Prototype equipment for ultrasonically assisted extrusion of composite plastics. MMM Technology allows the application of ultrasonics directly at the extruder head (more).

A SERIES OF EXTRAORDINARY AND UNIQUE BOOKS RECOMMENDED BY MPI

Coupled Tensors of Piezoelectric Materials State

Dr. Ljubisa Peric, Author

426 pages, English language version copyright ©2004 MPI. All international distribution rights reserved.

Some researchers spend a lifetime working towards the understanding of a specific complex problem and, as the culmination of their career, write a technical work offering such a profound and multilevel insight that it could not have been produced in any other way. Our contemporary lifestyle imposes enormous barriers against creating such life-career books, yet this is one. This extraordinary book provides incomparable understanding of piezoelectric materials and their behavior in electro-acoustic transducers.

Dr. Peric's book is available in English exclusively from MPI. To order the book, please use our online store, or read more here.

Piezoelectric Converters Modelling and Characterization

Miodrag Prokic, Author

240 pages, Copyright ©2004 MPI. All international distribution rights reserved.

If you are interested in more information about MMM technology (multi-frequency systems) and all modern methodology regarding the manufacture and assembly of High Power Ultrasonic Converters, this comprehensive book on the technology of ultrasonic transducer / converter design and mathematical modelling is available to download. This book provides a comprehensive description of the technology and practical know-how regarding High Power Piezoelectric Converters: their assembly, quality measurements and characterization (power, efficiency, impedance matching etc). To order the book, please use the PayPal link below, or download a preview here.

Second edition August 2004 - 266 pages

Design and Modelling of Power Ultrasonic Transducers

Dr. Milan D. Radmanovic, Dr. Dragan D. Mancic, Authors

198 pages, Copyright ©2004 MPI. All international distribution rights reserved.

New Covering one-dimensional and three-dimensional mathematical modelling of cylindrical sections (sonotrodes and rings) and Langevin-type piezoelectric sandwich transducers, this book provides the detailed information required for accurate models. To order the book, please use the PayPal link below, or download a preview here.

New paper (free download!):

Innovative aspects of particle-wave duality, gravitation and electromagnetic theory addressed from the point of view of electric and mechanical analogies (free download).

Revision of particle-wave dualism - a discussion document - download as PDF

More information, Preview and discussions on this paper.

For more information about our products, or recommendations for applying ultrasonics to your process, please contact Miodrag Prokic and/or see NEW APPLICATIONS and ***MORE***.

Krell Engineering -- custom design of industrial and medical ultrasonic resonators for frequencies between 10 kHz and 100 kHz

PowerUltrasonics -- independent resource for all users of high power ultrasonics. Describes the technology and applications and includes a searchable database of suppliers.

Mastersonic.com -- wideband sonic and ultrasonic technology for cleaning, welding, liquid processing and sonochemistry. Extensive library of ultrasonic technical documents on pdf.

UltrasonicsWorld.com -- top-quality replacement ultrasonic and sonochemistry components at super-low prices. Fully compatible with standard components from major manufacturers.

Active Ultrasonic -- MPI provides continuing support for all projects of the former company Active Ultrasonic.

SonicDiagnostic -- SonicDiagnostic supplies innovative products and solutions for acoustic measurement and component / material testing based on Acoustic Resonant Inspection (ARI).