... simple operation and maintenance. Main technical parameters: Type: SK10-1, SK20-1, SK40-1, SK80-2A Barrel capacity (L): 10, 20, 40, 80 ... .5, 11, 18.5, 30 Writhe speed (r/min): 1,440, 1,320, 1,020, 830 Flux of pump (L/min): 2-8 ... ): 80-200, 150-400, 300-700, 500-1,200 Subdivision (&um;m): 1-20 , 1-20, 1-20, 1-20 Weight (kg): 550, 1,000, 1,500, 2 ...