Our ISO/IEC 17025 Accreditation - Your Peace of Mind

Learn more about how we demonstrate our capacity to deliver the highest possible standard of reliable results. You really are in safe hands.

You Can Rely On Us

Our fully trained and highly experianced team of field service engineers can coduct on-site equipment calibrations to the ISO/IEC 17025:2017 International Standard thanks to our UKAS Calibration Laboratory Accreditation​.


We offer speed, time and temperature calibration / validation of your centrifuges using our equipment which is calibrated to UKAS standards.


Once calibration is complete we can (upon request) provide you with a UKAS recognised calibration certificate for your records and internationally traceable calibration certificates for all the calibration equipment we use.


If you would like to discuss the calibration or validation of your centrifuges (UKAS or otherwise) then please contact us and talk to a member of the team.


Please follow this link to see the full list of the Quality Assurance accreditations we hold.

Quick ISO/IEC 17025 Links


View our UKAS Schedule of Accreditation File

Download a PDF Version of our UKAS Schedule of Accreditation form the UKAS website:

UKAS Registered Calibration Labs - GTB Castle Ltd

Accredited for Calibration of Centrifuge

Temperature, Speed and Time.

GTB Castle Ltd's ISO 17025 Quality Certificate
Download a PDF Version of our BS EN ISO/IEC 17025:2005 Calibration Laboratory Quality Certificate:
UKAS ISO170252017 9th Dec 2019.pdf
Adobe Acrobat document [1.2 MB]

New to ISO/IEC 17025?

ISO's Explanation of ISO/IEC 17025:2017

This brochure provides an explanation of the general requirements for the competence of testing and calibration laboratories. And explains how it is only international reference for testing and calibration laboratories wanting to demonstrate their capacity to deliver reliable results.