GNW are ISO 9001:2015 accredited and audited annually by the European Certification Group with over 40 years of accredited on-site calibration experience. Our certificate can be validated HERE.

We are also registered with Safe Contractor and Avetta.

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accredited on-site calibration
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Accredited Calibration

Our skilled and experienced calibration experts are committed to providing a consistently high standard of on-site calibration services, backed by calibration accreditations from major industry bodies. At GNW Instrumentation, we understand the importance of accredited on-site calibration services across various industries. Accreditations ensure compliance with strict industry regulations and quality standards, resulting in better customer satisfaction, trust and peace of mind.

Our accreditations guarantee that the calibration services we provide are of a consistently high standard and meet industry regulations. GNW Instrumentation is accredited for ISO 9001:2015, SafeContractor and Avetta’s supply chain network. With these accreditations, we can guarantee accurate calibration services that are trusted by industry-leading organisations around the UK. Contact us today to book your on-site calibration.

Our Accreditations

Here at GNW Instrumentation, we proudly hold the following industry accreditations:

  • ISO 9001:2015 – Demonstrates our commitment to managing and improving our processes, creating a consistent level of excellence. We are audited annually by the European Certification Group.
  • SafeContractor – Recognises our commitment to health and safety standards. This accreditation standard helps contractors to demonstrate compliance with health and safety regulations.
  • Avetta’s supply chain network – As members of Avetta’s supply chain network, we have been thoroughly vetted and prequalified for our safe and sustainable business practices.

No wonder our accredited calibration services are trusted by industry-leading organisations across the UK.

Compliance and Quality Assurance

By obtaining these accreditations, GNW Instrumentation is able to demonstrate our commitment to excellence and quality assurance. Customers benefit from working with a proven supplier of accredited calibration services who can guarantee their processes meet the highest industry standards. With our ISO 9001:2015 certification, SafeContractor and Avetta accreditations, you can trust the reliability of our calibration services.

Benefits of Choosing GNW Instrumentation

Customers have the peace of mind that their accredited on-site calibration services are provided by a provider with industry-recognised certifications and a strong commitment to excellence. GNW Instrumentation is equipped with the latest technology and industry-leading processes, enabling us to provide accurate, reliable on-site calibrations. Plus, we know the industry inside out and provide a consistently high standard of accredited calibration services.

Make GNW Instrumentation your calibration provider of choice

We take great pride in being accredited for ISO 9001:2015, SafeContractor and Avetta accreditation, ensuring our customers receive high-quality, accredited calibration services that meet their requirements every time.

We understand the importance of accredited calibration services across various industries and are passionate about delivering accurate on-site calibrations with full accreditation and certification. With our commitment to excellence, you can feel confident that you are choosing a tried and tested calibration service provider.

Book your on-site calibration today by calling +44 (01704) 536 010 or email us at


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