Rockers and Rotators
Rockers and rotators allow uniform preparation of solutions by agitating samples at the desired speed. Models include compact options, heating/cooling mixers, and shaking incubators, as well as digital and platform shakers. Easily pick your desired speed, tilt angle, and temperature range.
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FAQ
A laboratory rocker produces a gentle, back-and-forth see-saw motion ideal for applications requiring low shear and uniform reagent exposure, such as gel staining, membrane blotting, and cell culture incubation. A rotator, by contrast, continuously rotates samples through 360° circular motion, ensuring complete mixing of liquids in tubes or vials. While both provide orbital-style agitation, rockers are preferred for flat vessels (trays, plates), and rotators for tubes and hybridization bottles where end-over-end mixing is required.
Performance and reproducibility depend on mechanical design parameters:
Motion type:
- Rocking (tilting 5–20°) generates gentle agitation for surface contact and diffusion-based mixing.
- Rotating (continuous 360°) promotes full liquid turnover and suspension reconstitution.
Angle of tilt: Larger angles (±15–20°) enhance mixing of viscous or high-volume samples.
Speed control: Adjustable speeds (typically 5–70 rpm) let users fine-tune motion intensity for sensitive biological materials. Advanced models offer variable-angle platforms, digital rpm displays, and microprocessor feedback to maintain constant speed under varying loads.
High-end rockers and rotators incorporate advanced features for precision, reliability, and GLP/GMP compliance:
Maintenance-free brushless DC motors for continuous, quiet operation.
Non-slip or interchangeable platforms for multiple vessel formats.
Timer, interval, and programmable profiles for repeatable agitation sequences.
Sealed housings and IP-rated enclosures for humid or CO₂-incubator environments.
Digital control with data logging and error diagnostics for traceability under regulated workflows. These capabilities ensure consistent mixing kinetics, sample integrity, and reproducibility across experimental runs.
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