PR-1 is designed to highly reproduce the dispersion of nano-materials such as CNTs, while operating safely by keeping the sample in an enclosed container. The dual-sonic technology (patented) rotates the container at a high speed while ultrasonic irradiates from the bottom and side of the ultrasonic bath. Rotating the container at an angle of 45℃ causes convection in the materials, and thus ultrasonic irradiates the entire sample.