If you’ve ever blended samples, you’ve likely used laboratory shakers. Precisely agitating the content of flasks and test tubes may require different types of motions. Depending on your samples, you may need anything from a soft, consistent rocking motion to a more rigorous mixing.
Typically the types of shakers include:
- Rocking creates a gentle uniform mixing with its see-saw motion. You may be able to adjust the tilting angle of some rocking shakers for low-speed motion.
- Rotating shaking for delicate samples in test tubes, flasks, and bottles. Some offer a broader range of motions. Rocker/rotator combinations are easy to find.
- Orbital is the most commonly used shaker and provides a smooth continuous motion for uniform mixing. For a side-to-side motion with simple agitation, try a reciprocating or dual-action shaker, which is a type of orbital shaker.
- Hand motion or Wrist action simulates the effect of hand mixing; adjustments may allow you to accelerate from a gentle swirl to an aggressive agitation.
- Waving provides a three-dimensional wave motion suitable for liquid samples, DNA extractions, blotting techniques, and general mixing of various-sized tubes.
- Vortex offers a circular orbit range of motion to mix contents efficiently. Variable speed models may be used for general mixing to resuspending pellets.