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: