How it works: a piston structure, through the replacement of the sealing mechanism of the cavity volume, air or liquid to achieve precise trace operation: lessons, transfer and dispensing liquids. Accuracy guarantee: double super wear-resistant materials sealing technology and high-precision stepper motor to ensure the precision and long life operation under liquid trace. Flexible customization include: Volume fluid path interfaces, the sealing material, a position sensor, including the rotary position encoder parameter function or interface can be customized or optional. Precision: 2% of the maximum range of distribution: CV <2% allocate 10% of the maximum range: CV <1% allocate 50% of the maximum range of: CV <0.1% Resolution: 2000 steps / stroke (SPS), Standard 4000 steps / stroke (SPS), a high-resolution type Maximum speed: 1 s / stroke (2000steps/second) Standard Range: 100ul, 250ul, 500ul, 1000ul, customizable liquid line interfaces: 2: M6 or 1/4- 28UNF flat port return gap: 1% range pressure capacity: 100 PSI Pump material: PMMA, can be customized operating temperature: 5 ° C-50 ° C (41 ° F-122 ° F) position sensor: NPN open-collector transistor Seal options: static sealing: double O-ring seal sliding seals: a combination of high wear-resistant sealing materials, can be customized motor rated current: 0.7A Encoder: Optional integrated motor drive controller: Optional Life expectancy: 500, 0000 cycles welcome to negotiate! Contact: Miss Tao 4008762808. 0512-62951808 QQ pottery Meissen Pend 2956359637 http://taomsun.en.alibaba.com/ http://shop1357371039766.1688.com/