ITHACA, N.Y.--(BUSINESS WIRE)--Rheonix Inc., developer of automated molecular diagnostic platforms and consumables, has appointed Bill Colston, Ph.D., to its board of directors. Colston, former CEO of QuantaLife Inc., led the development and product launch of Droplet Digital PCR™, a genetic analysis system for quantifying DNA molecules, until his company was acquired by Bio-Rad Laboratories in 2011.