Lee Products' range of micro-dispense valves, with their high speed (1,200Hz), long service life (250 million cycles minimum) and good repeatability, are capable of dispensing droplets in volumes of less than 100 nanolitres. The units also offer low power consumption, a response time of 0.25ms and operating pressures of up to 120psig, and are compatible with aqueous, solvent and alcohol-based media.