Harvard ApparatusHarvard Apparatus’ PHD ULTRA CP Syringe Pump infuses fluids under constant pressure by automatically adjusting the flow. The pump couples to most commercially available pressure transducers/amplifiers with a 0-10V output to deliver fluids with an applied force of up to 1,000 lbs with < +/-2 percent pressure accuracy. This family of syringe pumps features applied forces between 75 and 1,000 lbs; touchscreen LCD with icon interface; USB serial port (RS-232 (RJ-11), RS-485 ports for daisy chaining and an I/O & TTL); and a full range of accessories including multi-syringe racks, syringe heaters, in-line heaters and coolers, microfluidic circuits, connectors, tubing, syringes, and more. The pumps are infuse/withdraw models and come in stand-alone, remote and high-pressure models. – www.harvardapparatus.com