Programmabe Microfluidics Syringe Pump, Continuous Infusion (Push-Pull) , BS-8002X Specifications: The smoothest microfluidic syringe pump on the market, Advance Per Step: .252232 Nanometers, Holds 1 syringe up to 60 mL (140 mL partially filled), Infusion rates from 0.008 nL/hr (0.5 µL syringe) to 2545 µL/min (140 mL syringe), Easy-to-use keypad interface, Space Saving Chassis: Foot print size of only 5 3/4" x 8 3/4" Won't take up unnecessary space on your laboratory or production bench, Dispensing accuracy of +/- 0.5% and reproducibility of +/- 0.2%. Includes all the advanced functions and programming features of the 8000 Series, Includes the X Upgrade Smooth Linear/Gradient increasing and decreasing pumping feature. Same Features as the 8000/9000 Series of Syringe Pumps: Fully programmable; automation capable, Operates stand-alone or from a computer, Infusion and withdrawal, Set a single pumping rate and/or dispensing volume, Program up to 41 pumping phases that change pumping rates, set dispensing volumes, insert pauses, control and respond to external signals, sound the buzzer Network, control, and monitor up to 100 pumps with one computer. Motor stall detection, Dispensing accuracy of +/-1%, Unlimited lifetime technical support, Two year warranty..... BS-8004X Specifications: Same description and all the features of the BS-8002X plus..., Holds 2 syringes up to 60 mL. 140 mL partially filled. Advance Per Step: 4.185267857 Nanometers, Dispensing accuracy of +/- 0.5% and reproducibility of +/- 0.2%