Applying forces between 75 and 1,000 lbs the Phd Ultra CP syringe pump infuses fluids under constant pressure by automatically adjusting the flow. All Phd Ultra CP syringe pumps are infuse/withdraw models and are offered in a variety of configurations. It couples to virtually any commercially available pressure transducer/amplifier with a 0-10V output to deliver fluids with an applied force with <±2% pressure accuracy. The pumps are easy-to-use and have a touch screen LCD with icon interface. They can be ordered as stand alone, remote and high pressure models and can connect via USB, RS-232 (RJ-11), RS-485 ports for daisy chaining and an I/O & TTL. A full range of accessories like, multi-syringe racks, syringe heaters, in-line heaters and coolers, microfluidic circuits, connectors, tubing, syringes are available.