Certain features of 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.


Customer Service

How can we help you today?

Sigma-Aldrich customer service representatives are happy to help with any questions you may have regarding our products. To contact a Sigma-Aldrich representative by email, please use the following options

Technical Service Help
(Product Related Questions)

Customer Service Help
(Click this link to get further support)

For web site specific help:

Please use these options:

  1. Click the "Help" link located at the bottom of each page.
  2. If our on-line help cannot answer your question, feel free to send us an email.