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
(Use this form to inquire about existing orders.)

For web site specific help:

Please use these options:

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

Contact Sigma-Aldrich's customer support center:

Within the USA:
Phone:   314-286-7995
Fax:         314-286-7807
E-mail:   INTL@sial.com

Outside the USA:
Locate your regional office by clicking here