vortexsekoitin

A vortexsekoitin, known in English as a vortex mixer, is a laboratory instrument designed to mix small liquid volumes rapidly by creating a vortex in the liquid inside a tube or microplate well. The device uses a motor that drives an off-centre weight, producing a shaking motion that, when a tube is pressed against the platform, causes the liquid to swirl and mix. This simple principle allows quick, uniform mixing without manual shaking.

Most models accommodate standard tube formats such as 0.5 to 2.0 millilitre microcentrifuge tubes, PCR tubes, or small wells. Variants include single-tube units, multi-tube platforms, and digital or analog controls. Many vortex mixers offer adjustable speed and a timer, enabling reproducible mixing protocols. Some platforms are interchangeable, enabling use with different tube sizes, while others are compatible with microplates. Safety features may include non-slip feet, a protective lid, or splash guards to reduce aerosol formation.

Operational use is straightforward: place the tube in contact with the platform, select an appropriate speed, and run for the desired time. Vortex mixers are widely used in molecular biology, chemistry, clinical labs, and educational settings for tasks such as resuspending pellets, mixing reagents, or preparing samples for assays. Limitations include reduced effectiveness with highly viscous liquids or larger volumes, potential aerosol generation, and the need to ensure compatibility of tubes and caps with the device. They are typically considered auxiliary equipment for routine, rapid mixing rather than for thorough or large-scale mixing.