Mykrolis Corporation Acquires Bentec Scientific, LLC

Mykrolis Corporation Acquires Bentec Scientific, LLC
Mykrolis Expands Its Line of Consumable Products for CMP Applications With
Innovative PVA Brush Roller Solutions 


BILLERICA, Mass., Aug. 13  /PRNewswire-FirstCall/ -- Mykrolis Corporation
(NYSE:MYK), a leading supplier of components and subsystems to the
semiconductor industry, announced today it acquired the business and assets of
Bentec Scientific, LLC, a California-based, privately held manufacturer of
polyvinyl alcohol (PVA) based components used in semiconductor manufacturing.
Mykrolis was previously an exclusive worldwide distributor of Bentec's
products, which are currently sold by Mykrolis under the Planarcore(TM) brand
name.

"This acquisition expands our consumable product line and our exposure to one
of the more rapidly growing segments of our market," said C. William Zadel,
chairman and chief executive officer.  "As Bentec's exclusive distributor we
have had excellent market acceptance for this innovative product, especially
among our customers in Asia and Japan.  As such, we believe this acquisition is
a key addition to our technology portfolio and will allow us to leverage our
infrastructure in this area," Zadel said.

The Planarcore(TM) products are used in post-CMP (chemical mechanical
planarization) and substrate cleaning, which are critical parts of the
manufacturing process for advanced semiconductors and microelectronics.
Featuring a unique molded in place PVA construction on a disposable core that
delivers process and product stability, the Planarcore raises the performance
standard for post-CMP cleaning.  Planarcore(TM) has been shown to reduce tool
downtime and decrease defect rates on the wafer, establishing a highly
beneficial cost of ownership for the customer.  Briant Benson, president of
Bentec Scientific, commented, "I anticipate an excellent relationship with
Mykrolis and am confident that together we can continue to deliver process
solutions for CMP applications that improve the yields of our customers."

Mykrolis is a leading supplier of CMP consumable filtration products, which are
marketed under its Planargard(R), Planarcap(TM), Solaris(R), and Processgard(R)
brands.  These products are used to filter defect-causing particles from
slurries in the CMP process, an increasingly favored means of planarizing the
metal and dielectric layers of semiconductors with line widths of 0.18 (mu)m or
less.  The use of CMP is expected to grow dramatically as linewidths are
reduced, the number of wiring layers increase, and the use of copper continues
to expand.

About Mykrolis

Mykrolis Corporation, which reported sales of $186 million in fiscal 2003, is a
worldwide developer, manufacturer and supplier of liquid and gas delivery
systems, components and consumables used to precisely measure, deliver, control
and purify the process liquids, gases and chemicals in the semiconductor
manufacturing process. In addition, the Company's products are used to
manufacture a range of other products, such as flat panel displays, high purity
chemicals, photoresists, solar cells, gas lasers, optical disks and fiber optic
cables. Mykrolis is based in Billerica, Massachusetts.  For more information,
visit http://www.mykrolis.com/.

Mykrolis Forward looking Statement Disclaimer

The matters discussed herein, as well as in future oral and written statements
by management of Mykrolis Corporation that are forward-looking statements, are
based on current management expectations that involve substantial risks and
uncertainties which could cause actual results to differ materially from the
results expressed in, or implied by, these forward-looking statements.  When
used herein or in such statements, the words "anticipate", "believe",
"estimate", "expect", "hope", "may", "will", "should" or the negative thereof
and similar expressions as they relate to Mykrolis, its business or its
management are intended to identify such forward-looking statements.  Potential
risks and uncertainties that could affect Mykrolis's future operating results
include, without limitation, the risk that a sustained industry recovery may be
weaker than past recoveries, our inability to meet increasing demands for our
products from our key customers; increased competition in our industry
resulting in downward pressure on prices and reduced margins, as well as those
risks described under the headings "Risks Relating to our Business and
Industry", "Risks Related to the Securities Markets and Ownership of Our
Securities," and "Risks Related to our Separation from Millipore" in Item 7,
Management's Discussion and Analysis of Financial Condition and Results of
Operations of our Annual Report on Form 10-K for the fiscal year ended December
31, 2003.

  Contacts:
   Steve Cantor, Director of Investor Relations and Corporate Communications
   Tel#: [phone]
   Email: 



Planarcore and Planarcap are trademarks of Mykrolis Corporation. Planargard,
Processgard, Solaris and Mykrolis are registered trademark of Mykrolis
Corporation. 

DATASOURCE: Mykrolis Corporation



CONTACT: Steve Cantor, Director of Investor Relations and Corporate

Communications of Mykrolis Corporation, [phone],





Web site:  http://www.mykrolis.com/

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