Affymetrix to Host Conference Call on July 21, 2004 to Announce Second Quarter 2004 Results

Affymetrix to Host Conference Call on July 21, 2004 to Announce
Second Quarter 2004 Results 


SANTA CLARA, Calif., July 14  /PRNewswire-FirstCall/ -- Affymetrix, Inc.
(NASDAQ:AFFX) today announced that it will release results for the second
quarter of 2004 after close of the stock market on Wednesday, July 21, 2004.

Company management will host a conference call at 2:00 p.m. PT on July 21 to
discuss second quarter 2004 results and provide financial guidance for the
third quarter and fiscal year 2004.  The dial-in number for domestic callers
will be 888-737-3798 and for international callers will be 706-643-2578.  A
live webcast of the conference call can be accessed by visiting Affymetrix'
internet website at http://www.affymetrix.com/ under the "Investors" tab.

A telephonic replay of the conference call will be available until 5:00 p.m. PT
on July 28, 2004.  The replay number for domestic callers will be 800-642-1687
and for international callers will be 706-645-9291, passcode 8350582#.  An
archived webcast of the conference call will be available under the "Investors"
section of the company's website at http://www.affymetrix.com/.  The conference
call, replay and webcast are open to all interested parties.

About Affymetrix:

Affymetrix is a pioneer in creating breakthrough tools that are driving the
genomic revolution. By applying the principles of semiconductor technology to
the life sciences, Affymetrix develops and commercializes systems that enable
scientists to improve the quality of life. The Company's customers include
pharmaceutical, biotechnology, agrichemical, diagnostics and consumer products
companies as well as academic, government and other non-profit research
institutes. Affymetrix offers an expanding portfolio of integrated products and
services, including its integrated GeneChip(R) brand platform, to address
growing markets focused on understanding the relationship between genes and
human health. Additional information on Affymetrix can be found at
http://www.affymetrix.com/. 

DATASOURCE: Affymetrix



CONTACT:  Doug Farrell, Vice President of Investor Relations, Affymetrix,

[phone]



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

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