How can a mixer work without a rotating impeller? This two-minute animation shows the working principle of the FUNDAMIX® Vibro-Mixer and how it differs from conventional stirred tanks.

An electromagnetic drive moves a shaft with a perforated mixing plate up and down at high frequency.

As the plate oscillates, liquid is pushed through its conical bores, creating a directed axial flow that circulates through the whole vessel without a vortex and without baffles.

The animation walks through the key design elements, from the drive and the membrane sealing unit that replaces a rotating mechanical seal to the mixing plate itself.

It shows why this principle allows gentle, low-shear mixing of sensitive products such as proteins and cell cultures, while keeping the vessel closed for sterile operation under pressure or vacuum.

The video is a useful introduction for process engineers evaluating alternatives to impeller-based mixing in pharmaceutical and biotech production.