Sigma-Aldrich Corporation Announces 3rd Quarter 2009 Conference Call

ST. LOUIS, Oct. 1, 2009 (GLOBE NEWSWIRE) -- Sigma-Aldrich Corporation (Nasdaq:SIAL) will hold its quarterly conference call to discuss third quarter results on Thursday, October 22, 2009 at 11:00 AM Eastern Time (10:00 AM Central Time).

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