April 4, 2006 – Owlstone Nanotech Inc., a developer of nanotechnology-based chemical detection products, announced that it has appointed Bret Bader to the position of chief executive officer. As CEO of Owlstone, Bader will be responsible for developing and executing the strategic direction of the company. Owlstone Nanotech is a subsidiary of Advance Nanotech Inc. (OTC.BB:AVNA).

Prior to joining Owlstone, Bader held several leadership positions with Smiths Detection, the leading manufacturer of security screening sensors for the detection of explosives, narcotics, weapons and chemical and biological warfare agents, and a subsidiary of Smiths Group.

Most recently he served as general manager and vice president of the Americas division. He directed all sales and support activities in the U.S., developed and implemented all business-marketing plans and oversaw accounting and controller functions. Bader also held positions of general manager and vice president of the civil business division, and general manager of the security inspection division.

Before Smiths Detection, Bader held the positions of regional sales manager, national sales manager, and director of sales for EG&G Astrophysics, a U.S. manufacturer of x-ray security screening technology. “I am convinced that the Owlstone technology will change the way we design, deploy and utilize detection sensors in the safety and security markets,” he said in a prepared statement.