Osmonics' Milwaukee Facility Recieves ISO 9001 Certification, Reinforces Osmonics' Commitment

July 2, 2001

MILWAUKEE, June 27, 2001 - Osmonics, Inc. (NYSE:OSM) announced today that its Milwaukee facility, which manufactures the Autotrol®-branded residential and commercial water treatment control valve products, recently completed registration of its quality system to the International Organization for Standardization (ISO) 9001 series standards for quality through Underwriters Laboratories, Inc.

The ISO 9001 Quality System standard provides businesses with a framework around which to model their operations. The standard covers all aspects of operating a business, including management responsibility, customer input and feedback, product design, purchasing, planning, manufacturing, training and product servicing. The standard also provides for continual improvement of the quality system through regular management reviews, internal audits and operation of corrective and preventive action systems to eliminate the root causes of problems.

"This certification reinforces our ongoing commitment to customers," said Ed Fierko, Osmonics president and chief operating officer. "Our Milwaukee facility's ISO 9001 certification furthers our corporate-wide commitment to creating and sustaining quality manufacturing processes that enhance our customers' satisfaction."

ISO 9001 is an internationally recognized certification for a Quality Management System. The certification is administered and audited by accredited registrars throughout the world. For more information on the ISO 9001 series registration, visit www.iso.ch.

Osmonics is a leading manufacturer and worldwide marketer of high-technology water purification and fluid filtration, fluid separation, and fluid handling equipment, as well as the replaceable components used in purification, filtration, and separation equipment. These products are used by a broad range of industrial, commercial, household and institutional customers. Osmonics is traded on the New York Stock Exchange under the symbol OSM.

Source: Osmonics