VWR Vortex Mixer 3200 rpm Fixed Speed Touch Mode with Flat Top

The VWR 12620-838 is a rugged and reliable laboratory vortex mixer designed for high-speed, vigorous mixing of samples. This specific configuration features a 3-inch rubber flat top head instead of a standard cup head, allowing for the simultaneous mixing of multiple small tubes or the vortexing of flat-bottomed vessels like flasks and beakers. Engineered for simplicity and durability, this single-speed model provides a consistent orbital motion ideal for routine resuspension and reagent mixing in clinical and research environments.

Technical Performance and Design

• Fixed High-Speed Action: Pre-set to operate at a vigorous 3200 RPM, ensuring rapid and thorough mixing without the need for manual speed adjustments.

• 3-Inch Flat Top Attachment: The wide, slip-resistant rubber surface allows users to hold multiple microcentrifuge tubes or a single larger vessel against the head for flexible batch mixing.

• Heavy-Duty Cast Aluminum Housing: The base is constructed from weighted cast metal to provide maximum stability and prevent walking across the laboratory bench during high-speed use.

• Touch-Start Activation: Features a pressure-sensitive motor that activates only when downward force is applied to the flat top, allowing for efficient, on-demand operation.

Product Specifications

• Catalog Number: 12620-838

• Head Type: 3-inch (7.6 cm) Rubber Flat Top

• Speed: Fixed at 3200 RPM

• Orbit: 4.9 mm (0.19 in.)

• Switch Modes: Off / Touch (Start)

• Electrical Requirements: 120V, 50/60 Hz, 0.5 Amps

• Dimensions: 4.8 x 6.8 x 4.8 inches (12.2 x 17.3 x 12.2 cm)

Operational Advantages

• Increased Throughput: The flat top design enables the operator to vortex several tubes at once by holding them in a cluster, significantly speeding up sample preparation.

• Versatile Vessel Support: Unlike cup heads limited to narrow tubes, the flat surface accommodates various container shapes, including small Erlenmeyer flasks and specimen jars.

• Vibration Dampening: The weighted base and specialized suction-cup feet absorb mechanical energy, protecting nearby sensitive equipment from vibration interference.

• Maintenance-Free Motor: Features a brushless motor and a permanently lubricated ball-bearing system, ensuring years of quiet and reliable operation under heavy use.

Used; excellent condition.