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Multi-Prep Rapid Homogenizer 220 Volts 50/60 Hz^ Multi-Prep Rapid Homogenizer, 220 Volts 50/60 Hz, Speed Control: 2000 - 18000 RPM, Power: 805 Watts, Sample volume Minimum: 2ml for 7mm Probe/3ml for 10mm Probe, Noise rating: 68 dB, Dimensions: 10.6 X 14.6 X 14.5 inch, 60 oscillations per minute