... 1116 is that a laser light source irradiates on the particles; then the solid state detector detects the scattered light; and at ... 0.3, 0.4, 0.5, 0.65, 0.8, 1.0, 1.6, 2, 3, 4, 5, 7.5, 10, 15 ... , 20 umCount Range : 1 to 1,000,000 particle/literZero count : < 1 per 5 min.Counting efficiency : 50% at ... max. rangePower supply : 100 ~ 240VAC, 60Hz (12.6 VDC, 1.2 A)Dimension & Weight : 180 x 95 x 65 mm ...