A vortex mixer (also known as a vortexer or vortex shaker) is a laboratory device used to mix small volumes of liquids quickly and thoroughly. It works by creating a vortex (whirlpool-like motion) in the liquid, which is especially useful for suspending cells, mixing reagents, or resuspending pellets.
🔧 Basic Principle
A vortex mixer has a rubber cup or platform that oscillates in a circular motion at high speeds. When a test tube or small container is pressed against the cup, the motion is transferred to the liquid inside, causing a spiral vortex that mixes the contents efficiently.
🧪 Key Features of a Vortex Mixer
| Feature | Description |
|---|---|
| Speed Control | Adjustable speeds (typically from 100 to 3,200 RPM) depending on the model. |
| Touch or Continuous Mode | – Touch mode: Mixer operates when the tube is pressed on the cup. – Continuous mode: Runs non-stop until turned off. |
| Orbital Motion | The circular oscillation that creates the vortex effect. |
| Compatibility | Accommodates tubes of different sizes (e.g., microcentrifuge tubes, test tubes). |
| Stable Base | Heavy or suction base prevents tipping during high-speed operation. |
| Durability | Usually made of chemical-resistant materials for long-term use. |
| Interchangeable Heads | Some models have different attachments for plates or multiple tubes. |
| Compact Design | Takes up minimal bench space. |
⚙️ Common Applications
- Mixing reagents or chemicals.
- Resuspending cell pellets or precipitates.
- Mixing enzyme or PCR reactions.
- Homogenizing biological samples.
🔍 Types of Vortex Mixers
- Analog Vortex Mixers – Dial knob for speed control.
- Digital Vortex Mixers – Digital display and precise speed/time settings.
- Multi-Tube Vortexers – Can handle multiple tubes at once (e.g., 4, 6, or 8 tubes).
