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                                                                    Exhibit 99.1



                                                Contact: Frederick C. Flynn, Jr.
                                                                  (203) 238-8847


               PAUL J. POWERS RETIRES FROM CUNO BOARD OF DIRECTORS


Meriden, CT: July 6, 2000 - CUNO Incorporated (NASDAQ: CUNO) today reported that
Paul J. Powers has retired from the Company's Board of Directors.

Mr. Powers (65), has been a member of CUNO's Board of Directors since 1986, when
the Company was a subsidiary of Commercial Intertech Corp.. From June, 1987 to
October, 1999 Mr. Powers served as Chairman of CUNO's Board of Directors and was
the Company's Chief Executive Officer from July, 1996 until December, 1997.

Mark G. Kachur, CUNO Chairman and CEO, said, "Mr. Powers had the vision to
establish CUNO as an independent public company in 1996. During the past several
years in his executive capacities and as a Director, he has provided valuable
leadership and has made significant contributions to the Company. On behalf of
CUNO's Board of Directors, shareowners and employees, we wish him well in his
planned retirement."

CUNO is a world leader in the design, manufacture and marketing of a
comprehensive line of filtration products for the separation, clarification and
purification of liquids and gases. CUNO's products, which include proprietary
depth filters and semi-permeable membrane filters, are used in the potable
water, healthcare, and fluid processing markets.