ADE Receives Multi-Million Dollar Order From a Major Silicon Wafer Supplier; Wafer Inspection, Measurement and Yield Management

ADE Corporation (NASDAQ: ADEX) announced today that it
has received a multi-million dollar order for 300mm production wafer
quality certification and process control systems, including wafer
geometry measurement, surface inspection and defect classification,
and the new FabVision(TM) yield management and database system, from a
major semiconductor wafer supplier. Delivery of these tools is
expected to be completed in calendar 2006 to support the customer's
first 300mm wafer production fab in the United States.
   "This multi-million dollar order, encompassing ADE's broad range
of in-line wafer metrology, inspection and yield management products
continues to reflect the growth of 300mm wafer capacity and represents
the first expansion of 300mm silicon wafer production in the United
States," said Dr. Chris L. Koliopoulos, ADE's president and chief
executive officer. "Through the adoption of this tool set by this
major wafer supplier, ADE is committed to help the customer ramp up
300mm wafer production in a timely manner, to successfully achieve its
yield entitlements for this initial investment in the United States."
   Gartner Dataquest predicts that 300mm wafer demand will grow by
41% in 2006 and by an additional 20% in 2007. Nineteen new 300mm
semiconductor device fabs are planned either to begin or to ramp
production between 2006 and 2008.
   ADE's full line of production metrology and inspection equipment
enables high yield with low cost of ownership and a smooth transition
between technology nodes for wafer suppliers, incoming quality control
and semiconductor equipment manufacturers.

   About ADE Corporation

   ADE Corporation is a leading supplier of metrology and inspection
systems for the semiconductor wafer, semiconductor device, magnetic
data storage and optics manufacturing industries. The Company's
systems analyze and report product quality at critical manufacturing
steps for yield enhancement, providing quality certification data that
is relied upon by semiconductor wafer, device and computer disk
manufacturers. The Company's systems also are used for production
measurements in the semiconductor chip fabrication process. To learn
more about ADE, visit the Company's Web site at www.ade.com.

   Safe Harbor

   This news release contains certain forward-looking statements that
are subject to known and unknown risks and uncertainties that could
cause actual results to differ materially from those expressed or
implied by such statements. Those statements that make reference to
the Company's expectations, predictions, beliefs, assumptions and
anticipations should be considered forward-looking statements. These
statements include, but are not limited to, those associated with the
shipment of product to the aforementioned silicon wafer supplier, the
effect of ADE products on customer product quality and production
rates, and expected 300mm silicon wafer demand. These statements
involve risks and uncertainties including those associated with wafer
pricing and wafer demand; the results of its product development
efforts; and the success of ADE's product offerings to meet customer
needs within the timeframes required by customers in these markets.
Further information on potential factors that could affect ADE
Corporation's business is described in the Company's reports on file
with the Securities and Exchange Commission, including its Form 10-K
for the fiscal year ended April 30, 2005.