ISO/IEC 17025 Accredited Calibration Services

ISO 17025     |     ilac • MRA     |     ANAB Accredited

Accurate. Defensible. Audit-ready calibration backed by full measurement uncertainties, TUR, and one of North America’s widest scopes of accreditation.

  1. Home

Why More Customers Choose Transcat:

ISO 17025 AccreditedISO 17025 Accredited

Among the first U.S. commercial labs
accredited to ISO/IEC 17025; scope now among the broadest in North America.

scope and certificatesscope and certificates

Scopes & certificates
published for every lab
in our network.

Data pointsData points

10M+ data points verified annually
for regulated, high
risk industries.

Transcat Certificate of calibrationTranscat Certificate of calibration

Why ISO/IEC 17025 Accredited Calibration Matters

Have a large volume of instruments? Is downtime not an option? Our Embedded Lab Calibration option equips you with a Transcat-operated calibration lab tailored to your needs  right on-site at your facility. 

check
Full measurement uncertainty analysis—a required element of ISO/IEC 17025 accredited calibration.
check
Traceability to SI units established through accredited methods and verified equipment.
check
Results that are accepted across countries and continents, streamlining audits and global compliance.

Note on traceability: ILAC P14 guidance indicates that calibrations without reported uncertainties cannot propagate traceability; accredited results address this requirement.

Technician working in lab calibrating pressure gaugesTechnician working in lab calibrating pressure gauges

What’s Included in Every ISO/IEC 17025 Accredited Calibration

check
Accredited certificate documenting results, measurement uncertainties, and TUR where applicable.
check
Methods executed by competent personnel under externally assessed management and technical systems.
check
Traceability to SI standards through validated procedures and verified standards.
Technician working in a pharmaceutical manufacturing facilityTechnician working in a pharmaceutical manufacturing facility

Why Highly Regulated Industries Calibrate With Transcat

check
Early and enduring leadership in ISO/IEC 17025 accreditation, with one of North America’s widest scopes across our extensive lab network.
check
Lab level scopes and certificates available online for immediate auditor review.
check
Scale and consistency: 10M+ data points verified annually; standardized processes across labs ensure reproducible results.
check
Continuous oversight: internal and external assessments; documented quality systems that meet or exceed ISO/IEC 17025 requirements.
Electrical Power GridElectrical Power Grid

Who Typically Requires ISO/IEC 17025 Accredited Calibration?

Organizations operating in audit‑sensitive or high‑risk environments, including:

check
Life Sciences and Medical Device manufacturers
check
check
check
Government & Municipal Services
These industries rely on accredited results for strict QA/QC programs and regulatory inspections.

How Accredited Calibration Compares to Other Service Levels

When is accredited calibration necessary—and when might non‑accredited be enough?

Caliper

Non-Accredited (With Data): asfound/asleft measurements and tolerances; good for ISO 9001 programs that don’t require accreditation.

ISO 17025 Logo

ISO/IEC 17025 Accredited: uncertainties included, TUR provided; aligns with ILAC P14 expectations for traceability propagation and speeds auditor acceptance.

View Our Accreditation Scopes

Confirm capabilities for your lab: see our certificates and scopes by location:

Frequently asked questions

Does accredited calibration always include uncertainties?

Yes. For ISO/IEC 17025 accredited calibrations, uncertainty evaluation and reporting are required and appear on the accredited certificate.

Are ISO/IEC 17025 accredited results accepted internationally?

Yes. The standard is globally recognized; results are accepted across countries and continents, aiding global compliance.

What about traceability?

Accredited calibrations require traceability to SI units via accredited methods and verified standards. Note that results without reported uncertainties cannot propagate traceability under ILAC P14 expectations.

Where can I review your lab scopes?

All lab certificates and scopes are published on our site for download and audit support. View all lab certificates and scopes here

Transcat's level of expertise and customer service is beyond any I have ever experienced. They are the epitome of a customer-focused organization. I am truly impressed and inspired by their professionalism, courtesy, empathy, and responsiveness.

Alan Thomas, M-TriGen, Inc.

Ready to Get Started?

Request a Quote — or Talk to a Calibration Specialist about your standards, decision rules, and documentation needs.

Request a Calibration Quote

What is ISO/IEC 17025?

ISO/IEC 17025 is a set of international accreditation standards for calibration laboratories. The ISO 17025 standards were issued in 1999 and then revised in 2005 and 2017.ISO/IEC 17025:2017 details requirements for competency and consistency in laboratory operations.ISO stands for the International Organization for Standardization and IEC for the International Electrotechnical Commission.

International Standard for Lab Competence

ISO is an independent, non-governmental international organization. When a lab is ISO 17025-certified, its testing reports and certificates are more likely to be accepted with confidence both nationally and globally. That’s because the standards were developed by lab experts from around the world. The ISO 17025 accreditation allows a lab to demonstrate not just its competency, but also the capabilities of its personnel and the calibration procedures used. By achieving and maintaining accreditation, a lab also demonstrates that it can deliver valid testing results. When conducting an ISO 17025-accredited calibration, a complete uncertainty analysis is required for each calibration. This provides assurance of the laboratory’s measurement accuracy. The accuracy of the lab instruments used for each calibration is normally at least four times the accuracy of the calibrated device. Traceability is also required to SI Standards. Test results are accepted between countries and across continents.

ISO 17025 Accredited Calibration ServicesISO 17025 Accredited Calibration Services

What Accreditation Means to Our Clients

Labs can obtain their ISO 17025 certifications through external independent agencies. At Transcat, our accreditation provides assurance to our clients of testing that supports accurate and repeatable results. It speaks to our continuing ability to meet the stringent technical and management requirements of the standard. Transcat is proud to have been one of the first calibration labs in the U.S. to be accredited to 17025. Within our North American laboratory network, we have one of the widest scopes of accreditation in the industry.

Contact us to learn more about our industry-leading Calibration Services, available in a range of disciplines and for a wide scope of industrial and commercial instruments and equipment.