Fluid Metering, Inc. (FMI) has introduced its new model SMTRH for precision ultra-low-volume sub-microliter dispensing. The SMTRH uses FMI's patented CeramPump(R) valveless piston pumping principle and has a fluid path of zirconium and ceramic. The pump is driven by a precision stepper motor and will dispense from 500 nL to 5 µL per dispense. The piston stroke displacement is adjusted using an easy-grip flow control ring graduated in 450 divisions. The low dead volume pump head design ensures maximum bubble clearing and provides a typical stroke to stroke precision of 1% or better.