Feature 1、【Dual Pump Heads】The 2 pumps can be took down very easily for replacement. You can run one pump only. 2、【3 Rollers Design】The food grade pump with 3 wheel structure has moderate pulsation, precise flow, low wear and low noise. 3、【Single Button Design 】 The peristaltic pump adopts single button design, easy to use and more convenient to adjust the flow. There are clear scales for speed 0%、20%、40%、60%、80%、100%. 4、【Wide Range of Applications】Can widely be used in the field of experimental, scientific research and production in medical, agricultural, cosmetic, chemical etc. 5、【Tube Sized to Choose】The pump fits different size of tubes - 1mmx3mm (G1028-1); 2mmx4mm (G1028-2); 3mmx5mm (G1028-3) . Features: 【Dual Pump Heads】The 2 pumps can be took down very easily for replacement. You can run one pump only. 【3 Rollers Design】 The food grade pump with 3 wheel structure has moderate pulsation, precise flow, low wear and low noise. 【Single Button Design 】 The peristaltic pump adopts single button design, easy to use and more convenient to adjust the flow. There are clear scales for speed 0%、20%、40%、60%、80%、100%. 【Wide Range of Applications】Can widely be used in the field of experimental, scientific research and production in medical, agricultural, cosmetic, chemical etc. 【Tube Sized to Choose】The pump fits different size of tubes - 1mmx3mm (G1028-1); 2mmx4mm (G1028-2); 3mmx5mm (G1028-3) . Specification: Adapter: 24V/1A Motor Voltage: 12V Number of pump heads: 2 (dual pump heads) Pulsation: 3 rollers, small pulsation Tupe Size(IDxOU): 1mmx3mm (G1028-1); 2mmx4mm (G1028-2); 3mmx5mm (G1028-3) (Optional) Pump head material: engineering plastic Pump tube material: food grade platinum vulcanized silicone tube Flow rate range(water as tested liquid, only for reference ): 5ml/min-20ml/min(1x3mm tubing) 7ml/min-57ml/min (2x4mm tubing) 15ml/min-117ml/min (3x5 mm tubing) Packing List: 1 x Peristaltic Pump 1 x Extension Green Tube 1 meter 1 x Adapter 1 x User Manual Package List 1 x Peristaltic Pump 1 x Extension Green Tube 1 meter 1 x Adapter 1 x User Manual