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Essco Calibration Laboratory

27 Industrial Avenue, Unit 9
Chelmsford, MA 01824 USA

Phone: 800-325-2201

Fax: 978-256-1331


Office Hours:
Mon-Fri: 8am - 5pm

Shipping & Receiving*
Mon-Fri: 6am - 11pm


We encourage current and prospective clients to audit our quality system and facilities. If you would like to make arrangements – or simply have questions about why you should work with an accredited vendor like Essco – please call 800-325-2201.