Across International VQ-N High Energy Ball Mills. Desktop High Energy Vibratory Ball Mill with One 80ml St St Jar. VQ-N ball mills may be referred to as shaker mills, mixer mills or high-energy ball mills. They can be Oscillation speed, 1,200 rpm. Timing range, 1-999 seconds. Discharging granularity, Down to 0.1 micron. Unit weight, 45 Lb.