EXHIBIT 21

SUBSIDIARIES OF OSMONICS, INC.

Percentage Ownership
100	%	PORETICS CORPORATION	A Delaware Corporation
100	%	OSMONICS ASIA/PACIFIC LTD.	A Hong Kong Corporation
100	%	AUTOTROL CORPORATION	A Wisconsin Corporation
100	%	OSMONICS S.A.	A France Corporation
100	%	OSMONICS INTL. SALES CORP.	A Virgin Islands Corporation
100	%	DESALINATION SYSTEMS, INC.	A California Corporation
50	%	NIPPON AUTOTROL K.K.	A Japan Corporation
100	%	AQUAMATIC, INC.	A Delaware Corporation
100	%	MEMBREX, INC.	A Delaware Corporation
100	%	MICRON SEPARATIONS, INC.	A New York Corporation
100	%	MICRON SEPARATIONS INTERNATIONAL, INC.	A Virgin Island Corporation
100	%	OSMONICS DEVELOPMENT CORPORATION	A Minnesota Corporation
100	%	OSMONICS DEUTSCHLAND GmbH	A German GmbH

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