Feature: 1. Small dosing pumps have self-priming function, no valves or seals, convenient tube replacement, easy maintenance. 2. Positive and negative support: swap the positive and negative power supplies, can reverse the pump-head. 3. The dosing pump is generally used in the fields of experimentation, biochemical analysis, pharmaceuticals, fine chemistry, biotechnology. 4. Motor efficient with a stable performance in output, reduced operation noise, used the clasp without screw for convenient disassembly and assembly. 5. Stainless steel screws, rust corrosion resistance. 6. The pump-head designed for easy disassembly, easy to wash and maintain. Specification: It has been widely used in the fields of experiment, biochemical analysis, pharmacy, fine chemical industry, bioengineering, pharmaceutical filling, food, paper industry, ceramics, water treatment, environmental protections and so on. Features: Small dosing pumps have self-priming function, no valves or seals, convenient tube replacement, easy maintenance. Positive and negative support: swap the positive and negative power supplies, can reverse the pump-head. The dosing pump is generally used in the fields of experimentation, biochemical analysis, pharmaceuticals, fine chemistry, biotechnology. Motor efficient with a stable performance in output, reduced operation noise, used the clasp without screw for convenient disassembly and assembly. Stainless steel screws, rust corrosion resistance. The pump-head designed for easy disassembly, easy to wash and maintain. Specification: Type: A, B, C (optional) Material: metal Applicable power: direct current 12 voltage Working environment: 0-40℃ Relative humidity: <80% Pump tube(inner*outer diameter): 3 * 5mm Flow-range: type A: 60-150ml/min type B: 25-70ml/min type C: 10-26ml/min Speed range: 0.1-60rpm Current: type A: 300-350mA type B and type C: 250-300mA Motor size: 32 * 23mm / 1.3 * 0.9in Center distance of installation hole: 48.5mm / 1.9in Package size: 65 * 55 * 50mm / 2.6 * 2.2 * 2.0in Package weight: 80g / 2.8ounce Packing List: 1 * Peristaltic Pump Package List: 1 * Peristaltic Pump