Attention:

Certain features of Sigma-Aldrich.com will be down for maintenance the evening of Friday August 18th starting at 8:00 pm CDT until Saturday August 19th at 12:01 pm CDT.   Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

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Contact Information
 

Ordering & Customer Service
Phone: 800-325-3010
Fax: 800-325-5052

Sigma-Aldrich®
Customer Service
PO Box 14508
St. Louis, MO 63178
UNITED STATES