Contact Us

Contact Us

We Would Love to Hear from You

Our Customer Service team is eager to talk to you! Call us at (800) 833-1258 (select option 4) or email us anytime at

We can offer assistance in a number of areas, including:

Checking the status of an order: Please reference a web order number, purchase order number, or account number.

Media and sampling questions or requests: Special request chemicals, which badge or media to use for a chemical of interest (please include the chemical name and a CAS#, if possible), etc.

Sample or report status: Please reference your account number, badge ID number, or lab work order number.

Invoice questions: Please reference an invoice number, account number, or PO number.

App information and bug reports: Feedback is much appreciated. Please mention what device you are using for any bug reports.

Contact Us

Phone: (800) 833-1258, option 4. We are here in person to answer your call from 5am-5pm PST, Monday-Friday.



Corporate Office, Industrial Hygiene Testing Lab, Manufacturing, and MNR Lab & Instruments

Assay Technology
1382 Stealth Street
Livermore, CA 94551

Industrial Hygiene Testing Lab
AT Labs
250 DeBartolo Place
Suite 2525
Boardman, OH 44512

Industrial Hygiene Testing Lab
AT Labs
6003 Chapel Hill Road
Suite 109
Raleigh, NC 27607

Note: If you are unsure of where to return your samples for analysis, please check the product’s lab request form or instructions sheet.