Heavy-Duty Vortex Mixers - Digital & AnalogDigital Heavy Duty Vortex Mixer Designed for continuous duty LED displays for speed and time Includes foam insert for 1. 5 mL to 2. 0 mL microtubes The OHAUS Digital Heavy Duty Vortex Mixer is ideal for applications that demand repeatable results. Mixer features touchpad controls and LED displays for accurate speed (rpm) and time (minutes and seconds) results. The heavyduty design and efficient motor allow this mixer to operate in continuous duty and