Specifications: ? INPUT: AC 100-240V ~ 50HZ/60HZ ? FLOWRATE: 5~100 mL/min ; 2mm ID x 4mm OD 5~40 mL/min ; 3mm ID x 5mm OD 19~100 mL/min ; ? PUMP TUBE MATERIAL TYPE: silicone ? OVERALL DIMENSIONS: 100mm X 60mm X 55mm ? WORKING CONDITION: 0~40?, relative humidity <80% ? WEIGHT: 180 g Packing list: ? 1 x Water Pump (With Tube 3mm ID x 5mm OD) ? 1 x Power Adaptor ? 1 x Back Up Tube (2mm ID x 4mm OD) Description: This peristaltic pump has been widely used in the field of experimental, biochemical analysis, pharmaceuticals, fine chemicals, biotechnology, pharmaceutical, products, ceramics, water treatment, environmental protection, etc.