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At Lab Unlimited, Carl Stuart Group, our aim is to continuously improve our quality systems in pursuit of a flawless and technically excellent service. In demonstration of this, we have successfully maintained our ISO 9001 certification for over 20 years and we continue to evolve our systems with the future developments of this standard.

Our technical capabilities meet international standards being accredited by INAB to ISO/IEC 17025 since 2010. This standard tests the competence of our team and quality of the calibration we complete presenting results to precise measurement uncertainty. As a certified laboratory, we have been assessed by technical experts and found to successfully meet criteria of the standard. We are frequently audited and run a programme of inter-laboratory comparison tests to ensure that our technical reports are accurate, meet the requirements of the standard and are in line with our peer group.

Carl Stuart Ltd is registered as a balance, gravimetric and temperature calibration laboratory competent to carry out calibrations either in our in-house laboratory or at your own facility. Contact us at for more information or download our certificates.

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ISO 9001:2008 logo INAB logo INAB logo
pdf symbol ISO 9001-2008GB93/4316 pdf symbol INAB270C Accreditation pdf symbol INABSchedule of
Accreditation 270C

Our goal is to provide a level of technical excellence and after-sales service that is second to none.

Quality Memberships

CHAS - The Contractors Health and Safety Assessment Scheme Membership

Being an accredited member of CHAS (The Contractors Health and Safety Assessment Scheme), a founder member of SSIP (Safety Schemes in Procurement) enables us to stand firm on our commitment to Health & Safety requirements from our own and the customers perspective. Our customer has an 'intact safety net' knowing that the Health and Safety systems that exist in Carl Stuart are in compliance to national standards and are audited annually for compliance in this respect.
Download our CHAS Accreditation Certificate

REPAK Membership

The Repak symbol displayed on Carl Stuart premises demonstrates that the accumulated packaging waste has resulted in a financial contribution to Repak's waste packaging compliance scheme to fund the recovery of the packaging.

This ultimately proves that we care about our own and ultimately the customers' environments by assuring that our waste is streamlined and recycled in the most efficient manner, having a positive impact on the ultimate reduction of the global warming to the biosphere.

NISO - National Irish Safety Organisation Membership

Our membership with NISO entitles us to work with a national organisation that helps us to promote health, safety and welfare at work and to keep abreast of issues and developments in health and safety including best practice and guidance. This means that the Health & Safety support and knowledge that we provide offers valid and 'off the press' reassurances to our customers and employees in Carl Stuart.

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