Mykrolis Corporation Announces Timing of Fourth Quarter Press Release and Conference Call

Mykrolis Corporation Announces Timing of Fourth Quarter Press
Release and Conference Call 


BILLERICA, Mass., Jan. 26  /PRNewswire-FirstCall/ -- Mykrolis Corporation
(NYSE:MYK) will announce the financial results for its fourth quarter of fiscal
2004 on Thursday, January 27, 2005, before the opening of the market.

A conference call with management will be held that day at 10:00 a.m. (EDT) to
discuss the results of the quarter.  To participate, please call one of the
following numbers and ask for the "Mykrolis Conference Call":  1-800- 818-5264
(domestic); 913-981-4910 (international).

The conference call can also be accessed both live and on-demand via webcast at
http://www.mykrolis.com/.  Click on "Investor Relations" and follow the
directions for the webcast.

A telephonic replay of the call can be accessed by dialing 1-719-457-0820,
access code 375614.  The replay will be available starting at 1:00 p.m. (EDT)
on January 27, 2005, through Thursday, February 17, 2005.

About Mykrolis

Mykrolis Corporation 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.  For more information, visit
http://www.mykrolis.com/.

  Contact:
   Steve Cantor, Director of Investor Relations and Corporate Communications
   978-436-6500
   

DATASOURCE: Mykrolis Corporation



CONTACT:  Steve Cantor, Director of Investor Relations and Corporate

Communications of Mykrolis, [phone], 



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

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