The IKA RW 20 Digital Overhead Stirrer is a laboratory mechanical stirring system designed for mixing, homogenizing, suspending, and agitating liquid and semi-viscous laboratory samples. The unit shown is clearly marked IKA RW 20 digital and features a digital LED speed display, rotary speed-control knob, motor-driven stirring shaft, chuck assembly, and laboratory support stand.

The RW 20 digital uses a two-speed mechanical drive with stepless speed adjustment. According to IKA, it is designed for stirring quantities of up to 20 liters of water and can handle viscosities up to 10,000 mPas. Its maximum torque at the stirring shaft is 150 Ncm, with higher short-term overload torque available at low speed. IKA

The pictured equipment includes the overhead stirrer, vertical support arrangement, stirring shaft and blue laboratory base. The front LED display is illuminated and showing 0 rpm in the photograph. The exact stirring blade/element configuration should be verified separately.

Applications

The IKA RW 20 digital is suitable for general laboratory mixing applications where mechanical overhead stirring is preferred over magnetic stirring. It can be used for preparation of solutions, suspensions, dispersions, formulations and other laboratory mixtures.

Typical applications include chemical laboratories, pharmaceutical research, biotechnology, material science, formulation development, sample preparation, educational laboratories and research facilities. Different IKA stirring elements can be selected according to the viscosity, vessel geometry and mixing characteristics required.

Main Features

• IKA-WERKE RW 20 digital overhead stirrer
• Digital LED speed display
• Speed display currently showing 0 rpm in the photograph
• Two mechanical speed ranges
• Stepless speed adjustment
• Speed range up to 2,000 rpm at 50 Hz
• Up to 2,400 rpm at 60 Hz depending on configuration
• Maximum stirring quantity of 20 L with water
• Maximum viscosity up to 10,000 mPas
• Maximum shaft torque of 150 Ncm
• Overload torque up to 300 Ncm at 60 rpm
• 0.5–10 mm chuck range
• Hollow shaft design
• Push-through shaft capability when stationary
• Motor-driven overhead stirring
• Suitable for continuous operation

Technical Specifications

IKA's current technical documentation specifies a 20 L maximum water stirring quantity, 10,000 mPas maximum viscosity, 60–2,000 rpm at 50 Hz, 150 Ncm maximum shaft torque, 0.5–10 mm chuck range and 3.1 kg weight for the RW 20 digital. IKA

Benefits of Refurbished Laboratory Equipment

A refurbished IKA RW 20 digital overhead stirrer can provide laboratories with a reliable mechanical mixing platform at a lower cost than purchasing new laboratory equipment. Its overhead configuration is particularly useful for applications involving larger volumes or more viscous materials where conventional magnetic stirring may not provide sufficient agitation.

Refurbished laboratory equipment can be a practical choice for research laboratories, educational institutions, pharmaceutical facilities and industrial laboratories. Before use, the motor, speed control, LED display, chuck, shaft, electrical system and stand should be inspected and tested.

Additional Information

The photographed unit shows visible cosmetic wear consistent with previously used laboratory equipment. The digital display is illuminated, but the photograph alone does not establish complete operating performance or calibration accuracy.

The exact stirring blade/impeller, vessel, clamp accessories and electrical version should be verified before purchase. Accessories and consumables not specifically shown or mentioned are not included.

• IKA – Laboratory Equipment
• IKA RW 20 Digital – Technical Data
• IKA RW 20 Digital Downloads