If the sound is turned up enough, droplets will jump from the liquid. This technique was refined in the 1970s and 1980s by Xerox and IBM[2] and other organizations to provide a single droplet on-demand for printing ink onto a page. Two California-based companies, EDC Biosystems Inc. and Labcyte Inc. (both now acquired by Beckman Coulter), exploit acoustic energy for two separate functions: 1) as a liquid transfer device and 2) as a device for liquid auditing.