Corporate Overview

Contact Us

Customer Service: 1-800-322-1174

For Domestic Requests (US and Canada) email:

For International Request (outside US and Canada) email:

Cambridge Isotope Laboratories, Inc.
3 Highwood Drive
Tewksbury, MA 01876

CIL Account Coordinators are available from 8:00 A.M. to 5:30 P.M. Eastern Standard Time Monday through Thursday and Fridays from 8:00 A.M. to 5:00 P.M Eastern Standard Time. 

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Contact Us | Cambridge Isotope Laboratories
Contact Us, Stable Isotopes, Stable Isotope, order products
Cambridge Isotope Laboratories, Inc. (CIL) is the world’s leading producer of stable isotopes and stable isotope labeled compounds. With over 400 employees and laboratories in four countries, CIL specializes in the process of labeling biochemical and organic compounds with highly enriched, stable (non-radioactive) isotopes of carbon, hydrogen, nitrogen, and oxygen.