The Qdos 120 peristaltic metering pump from the Watson-Marlow Fluid Technology Group delivers flows up to 120 L/hr (31.7 gph) at a maximum pressure of 4 bar (58 psi). All models in the Qdos family are designed to eliminate the need for ancillaries, boost productivity and reduce chemical waste. There are no valves or seals to clog, leak, gas-lock or corrode. The fully contained ReNu pump head prevents spillage or exposure to chemicals. 800/282-8823; www.watson-marlow.com.