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.

Supelco Analytical

Technical Service

Consult our helpful guides for answers to a few basic questions. When you want additional information about a product, or help with a problem, our knowledgeable Technical Service chemists and our extensive library of free technical literature are just a telephone call, fax message, or e-mail away. We are always ready to respond to your questions, suggestions, criticisms, and changing needs.

In the USA and Canada: please contact us at the following telephone numbers Monday - Friday during the hours of 8AM - 8PM Eastern Time

Fax: 800-359-3044/814-359-5458


For all other countries, contact your local Sigma-Aldrich office or distributor.