Model 551 High Temperature Metering Pump uses stainless steel isolation diaphragms in a hydraulic manifold to separate the fluid being pumped from the driver pump.  Model 551 High Temperature Metering Pump allows operation up to 200°C and the maximum pressure is 5,000 PSI (Micro and Analytical flow), 3,000 PSI (Semi-Prep flow) and 1,500 PSI (Prep flow).  A unique feature of this model is the ability to operate the pump remotely, up to 1.5 meters away from the electronics and control panel.