The laboratory-ready Iota One precision valve driver system from Parker Hannifins Pneutronics Division is designed for research laboratories and critical laser spectroscopy application. The instrument is a self-contained, rack-mountable system that supplies repeatable control and synchronisation of gas flow and laser firing. Its driver offers pulse duration ranges in microseconds, milliseconds, or longer, with internally-generated pulse trains achieved by setting on and off times or an operating frequency. Two externally triggered modes can be selected allowing partial or complete external control.