The Model SMTRH is an ultra-low-volume sub-microliter dispensing pump for medical diagnostic, biomedical, and analytical instrumentation. Driven by a precision stepper motor, the pump dispenses 500 to 5 mL of fluid per dispense. The easy-grip flow-control ring is graduated in 450 divisions for adjustment of piston stroke displacement. The design of the low dead volume pump head ensures maximum bubble clearing and provides a typical stroke-to-stroke precision of 1% or better. Also offered are stepper motor controllers, which range from simple quick-start control to intelligent programmable control capabilities.

Fluid Metering Inc
(800) 233-3388; www.fmipump.com