Our Calibration Services

Interweigh Systems Inc. provides the highest quality mass and scale calibration service available today. Interweigh Systems Inc. is I.S.O. 9001:2008 and ISO\IEC 17025:2005 registered so you can be assured of a consistent product.

List of Calibration Documents:

Certificate of Accreditation
Schedule A
Certificate of Registration
Scope of Accreditation - Scope of Calibration - Mass Calibration
Scope of Accreditation - Scope of Calibration - Scale Calibration

Scale Calibration Service

Our Scale Calibration Service includes an inspection to clean, test, and make field adjustments within maintenance tolerances, furnish certified test weights and supply a written report on completion of the job.

Mass Calibration Service

Our Mass Calibration Service will recalibrate and refurbish your calibration weights using a state-of-the-art laboratory and high quality equipment. For all new and existing weights that need recalibration, we also offer both Traceable and Calibration Certificates. Our mass calibration laboratory and processes are ISO/IEC 17025 compliant and are capable of providing calibrations from 1.0mg to 30.0kg (0.1 lb to 50.0 lb).

Our Calibration Lab

Our state-of-the-art metrology lab provides quality weight calibration services, including recalibration and refurbishing of existing weights. For all new and existing weights that need recalibration, we offer both Traceable and Calibration Certificates.

Schedule A

On August 2, 2007 Measurement Canada accredited Interweigh Systems Inc to inspect devices as set out in Schedule A of the Accreditation Agreement. Our accreditation number is A-285. Click here to download a copy of that agreement for your information.

Accreditation Number: A-285

Our accreditation number is A-285. Download Interweigh’s Certificate of Accreditation.

Certificate of Accreditation


Our Management Systems of Registration Certificate
Interweigh's ISO 9001:2008 (E) Certificate of Registration


Mass Calibration

Interweigh’s CAN-P-4E & ISO/IEC 17025:2005 Certificate of Accreditation, Scope of Accreditation and Scope of Calibration & Measurement Capabilities. (These documents are in pdf format and require Acrobat 4.0 or higher.)

Scale Calibration

Interweigh’s CAN-P-4E & ISO/IEC 17025:2005 Certificate of Accreditation, Scope of Accreditation and Scope of Calibration & Measurement Capabilities. (These documents are in pdf format and require Acrobat 4.0 or higher.)


Contact us today: Toll Free: 1.800.268.3269 or by Email:

The Ownership and Management - Interweigh Systems Inc. 51 Bentley Street, Markham, Ontario, Canada, L3R 3L1
Phone: (416) 491-7001 ~ Toll Free: (800) 268-3269 ~ Fax: (905) 940-1711

Or contact us at one of our five locations: Markham, Mississauga, Woodstock, Montreal and Calgary