The VWR Analog Vortex Mixer Model 10153-838 is a reliable and durable lab instrument designed for mixing small liquid samples efficiently. Its analog speed control knob allows precise adjustment of vortexing intensity, from low to high speed. This compact vortex mixer features a secure, rubberized mixing head that accommodates various tube sizes. Its robust construction and simple operation make it ideal for routine mixing tasks in biochemistry, molecular biology, and clinical laboratories. The unit operates on standard US voltage and frequency, ensuring easy integration into standard lab setups. With its proven VWR quality and straightforward design, it is a dependable choice for everyday sample mixing needs.