Model:  6k Low noise: 

Model:  L-450A Max. RCF:  2420*g Max. SPEED:  4500r/min Max. Capacity:  12*15ml, 12x 10ml, 8x 20ml, 12x 7ml Noise:  ≤50dBA Power:  AC230V 50HZ Power consumption

Model:  L-450AMax. RCF:  2420*gMax. SPEED:  4500r/minMax. Capacity:  12*15ml, 12x 10ml, 8x 20ml, 12x 7mlNoise:  ≤50dBAPower:  AC230V 50HZPower consumption drive:  90WDimension:  300*270*210m