Polypore Sets Earnings Release and Conference Call Date CHARLOTTE, N.C., Nov. 5 /PRNewswire-FirstCall/ -- Polypore, Inc. plans to release earnings results for the third quarter of 2004 on Monday, November 15th at approximately 8:00 AM Eastern time. The Company then intends to host a conference call to review and discuss those quarterly results beginning at 10:30 AM Eastern. You are invited to listen to the conference call, which will be broadcast live over the Internet on the Company's website, at http://www.polypore.net/ , on November 15, 2004 at 10:30 AM. If you are unable to participate during the live webcast, the call will be archived on the Company's website. A replay of the conference call will be available from 1:30 PM on November 15th until 11:00 PM on November 19th via telephone at 800-642-1687 (in the U.S.) or 706-645-9291 (international). Enter code 2051797. Polypore, Inc., a wholly owned subsidiary of Polypore International, Inc., is a growing worldwide developer, manufacturer and marketer of highly specialized polymer-based membranes used in separation and filtration processes. Polypore's products and technologies target specialized applications and markets that require the removal or separation of various materials from liquids, with concentration in the ultrafiltration and microfiltration markets. Truly a global provider, Polypore has manufacturing facilities or sales offices in ten countries serving five continents. Polypore's corporate offices are located in Charlotte, NC. Contacts Lynn Amos 704.587.8409 Mark Hadley 704.587.8886 DATASOURCE: Polypore, Inc. CONTACT: Lynn Amos, +1-704-587-8409, or Mark Hadley, +1-704-587-8886, both of Polypore, Inc. Web site: http://www.polypore.net/

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