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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We will attempt to provide a response to your email inquiry within two hours during our regular business hours. If you would prefer to speak with one of our web site support specialists, feel free to call us.

USA
877-856-5586
Available Monday - Friday
7:00 AM to 6:00 PM (Central Time)

non-USA
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