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South Korea · Accreditation

ISO/IEC 17025 accreditation in South Korea

Achieve ISO 17025 accreditation in South Korea with Sterling: 8,100+ client engagements in 60+ countries, 20+ years.

  • Accreditation support
  • Tokyo office team
  • Effivity software included
  • Academy training included

Clients include

  • Allianz
  • Emirates Flight Catering
  • Etihad Rail
  • Haier
  • Whirlpool
  • Emerson
In short

ISO 17025 accreditation in South Korea at a glance

ILAC mutual recognition arrangement, KOLAS signatory entry refers to ISO/IEC 17025, yet none of the South Korean instruments checked makes it compulsory. Buyers in South Korea ask for it anyway.

Laboratories in South Korea are accredited, not certified, and the body that accredits them is KOLAS, the Korea Laboratory Accreditation Scheme run by the Korean Agency for Technology and Standards. KATS says KOLAS accredits calibration and testing laboratories on the basis of ISO/IEC 17025 and inspection bodies on the basis of ISO/IEC 17020 under the National Standards Act, and ILAC lists KOLAS as a full member and mutual recognition arrangement signatory for calibration, testing, medical testing, proficiency testing providers and reference material producers. That recognition is what lets overseas customers accept KOLAS-accredited results. Laboratories supporting the automotive, battery, chemical and medical device industries are typical applicants. Sterling's Tokyo office prepares the quality manual, method validation, measurement uncertainty and traceability evidence, with Effivity and Sterling Academy included with the engagement. KOLAS alone grants the accreditation.

The need

Who needs ISO 17025 in South Korea, and what happens without it

In South Korea the question rarely comes from a law. It comes from the buyer, the regulator or the partner that wants proof before it signs. These are the organisations that get asked.

  • Calibration laboratoriesKATS says KOLAS accredits calibration laboratories on the basis of ISO/IEC 17025, and ILAC lists calibration within KOLAS's mutual recognition scope.
  • Independent and in-house testing laboratoriesKOLAS accredits testing laboratories against ISO/IEC 17025 under the National Standards Act, and ILAC lists testing within its scope.
  • Laboratories supporting automotive, battery, chemical and medical device industriesInvest Korea lists automotive parts, batteries, fine chemicals and pharmaceuticals and biotechnology among Korea's industries, and the Free Economic Zones name battery, chemical and medical device activity.
  • Manufacturers whose customers require accredited test or calibration reportsAn accreditation from a mutual recognition arrangement signatory is built for acceptance of results beyond Korea.

Not sure which of these applies to you?Answer a short set of questions and your readiness report arrives by e-mail.

Take the ISO/IEC 17025 readiness check
Requirements

ISO 17025 requirements in South Korea

Strip away the vocabulary and ISO/IEC 17025 requires a laboratory to prove six things about its competence and the results it reports.

You are impartialCommercial, financial or other pressures do not influence results, and risks to impartiality are identified and managed.
Staff are competent and authorisedEach person who performs, reviews or reports work is qualified, trained, monitored and authorised for those tasks.
Equipment is calibrated and traceableEquipment is fit for purpose and calibrated, with measurement results traceable to recognised references.
Methods are validated or verifiedMethods suit the work, are validated where needed or verified before use, and measurement uncertainty is evaluated.
Results are checked and reported properlyQuality control and proficiency testing confirm validity, and reports state results clearly, accurately and without ambiguity.
The management system worksComplaints, nonconforming work, risks, internal audits and management review run under a documented management system.

In South Korea these six sit alongside the local laws and regulations listed under drivers below; one system can evidence both. The detail is on the global hub: ISO/IEC 17025 explained →

How Sterling gets a South Korean company accredited

How to get ISO 17025 accreditation in South Korea

One team from the Tokyo office carries the work from scoping to accreditation. Clients across South Korea are served from Sterling's Tokyo office, on-site where the work needs it and remotely otherwise.

  1. Discovery call and scopeEntities, locations, regulators and target date, agreed before any proposal.
  2. Gap assessment against ISO/IEC 17025 and the South Korean requirements that apply to youControls you already run for your regulators and customers are reused, not rebuilt.
  3. Your system built with your team in EffivityRisks, controls, evidence, incidents and reviews in one live system the auditor can see.
  4. Internal audit, management review and corrective actionsYour internal auditors trained by Sterling; the evidence proven before any external review.
  5. The accreditation body assessmentThe accreditation body assesses and decides. Sterling supports the assessment.
Included in every engagement
  • End to end, from one team
  • Effivity ISO & GRC software
  • Preferential Sterling Academy access, with complimentary awareness training for your people
  • Internal auditor training for your audit team, as applicable to your standard
  • Vulnerability assessment on ISMS engagements

The Sterling Promise: 100% on-time completion, 100% success, 8,100+ client engagements.Sterling does not certify. Certification decisions stay with independent bodies.

Time

How long does ISO 17025 accreditation take in South Korea?

There is no standard duration: it depends on your scope and on how much of the system already runs. In South Korea these are the factors that set the timeline.

  • Number of test or calibration methods and technical areas in scope
  • Measurement traceability and uncertainty evidence
  • Proficiency testing or comparisons to complete
  • KOLAS assessment scheduling around the Seollal and Chuseok holiday periods

Sterling agrees a dated plan with you on the discovery call, once the scope is known.

Cost

How much does ISO 17025 accreditation cost in South Korea?

The cost has two parts: the consulting work to build and prove the system, and the accreditation body’s fees, which are quoted separately. In South Korea these factors move both.

  • Number of methods, disciplines and sites in scope
  • Equipment calibration and reference standards
  • Proficiency testing and training costs
  • KOLAS fees quoted separately from consulting

Sterling gives one customised, all-inclusive proposal after the discovery call, never before the scope is agreed.

Choosing a partner

ISO 17025 consultants and assessors in South Korea

Two different organisations are involved. A consultant helps you build the system and prove it works; the accreditation body then audits or assesses it and decides. Keeping the two separate is what makes the result credible to buyers and regulators.

  • Check that the body’s accreditation or approval covers ISO 17025 and your sector, and that its certificates can be verified online.
  • Ask the consultant how the local requirements in South Korea are mapped into the same system, so nothing runs twice.
  • Ask for client references in your sector; Sterling’s client letters are available on request.
  • Agree who owns the evidence and the tool after the engagement; with Sterling the system stays yours, in Effivity.

    Laws and regulations that drive ISO 17025 in South Korea (3)

    InstrumentHow it treats the standard
    KOLAS accreditation of calibration and testing laboratories (KATS)Scheme rule
    KOLAS, established by KATS, accredits calibration and testing laboratories on the basis of ISO/IEC 17025 under the National Standards Act.
    ILAC mutual recognition arrangement, KOLAS signatory entryRefers to / expects
    ILAC lists KOLAS as a full member and signatory with scope covering calibration and testing under ISO/IEC 17025.
    KOLAS accreditation scheme pagesScheme rule
    KOLAS publishes accreditation procedures, regulations and a searchable list of accredited bodies.

    Accreditation, audit language and remote audits in South Korea

    Accreditation, not certification: KOLAS accredits calibration and testing laboratories against ISO/IEC 17025, and ILAC lists KOLAS as a mutual recognition arrangement signatory for calibration and testing. Apply to KOLAS and confirm the scope of the accreditation you need. Sterling prepares the laboratory but does not accredit. No laboratory is named here. Edition and transition details: ISO/IEC 17025 hub →

    Audit language

    Agree the assessment language and the language of the quality manual and reports with KOLAS at application; calibration and test reports for overseas customers may be issued in English.

    Remote and on-site

    KOLAS decides how assessment is carried out; laboratory premises, equipment and witnessed tests are normally assessed on-site.

    ISO 17025 in South Korea: questions clients ask

    Who accredits laboratories in South Korea?

    KOLAS, the Korea Laboratory Accreditation Scheme established by the Korean Agency for Technology and Standards. It accredits calibration and testing laboratories on the basis of ISO/IEC 17025 and inspection bodies on the basis of ISO/IEC 17020 under the National Standards Act. Laboratories apply to KOLAS directly, so no certification body is involved.

    Is a KOLAS accreditation recognised internationally?

    ILAC lists KOLAS as a full member and mutual recognition arrangement signatory, with scope covering calibration and testing under ISO/IEC 17025. That is designed to help test and calibration results travel between participating economies. Check that the accredited scope on your certificate matches the methods your customer relies on.

    What else does KOLAS accredit besides calibration and testing?

    Its site lists inspection bodies, reference material producers, medical testing laboratories, proficiency testing providers, product certification bodies, biobanks, and validation and verification bodies. ILAC's entry shows medical testing under ISO 15189, proficiency testing under ISO/IEC 17043 and reference materials under ISO 17034. Each has its own standard, so confirm which one fits your activity.

    Can I use KOLAS accreditation for a medical laboratory?

    Medical testing is accredited under a different standard. ILAC's entry for KOLAS lists medical testing against ISO 15189, separate from the ISO/IEC 17025 scope for calibration and testing. If your laboratory performs clinical testing, plan around ISO 15189 rather than ISO/IEC 17025, and check KOLAS's published scheme for the application route.

    Read more

    More on ISO 17025 for South Korean organisations

    Explore

    Other standards South Korean businesses ask Sterling for

    Organisations in South Korea often combine ISO/IEC 17025 with one of these, under one management system where the scopes allow.

    All 22 standards Sterling delivers in South Korea →

    Next step

    Start with a free discovery call from the Tokyo office

    A Sterling consultant goes through your entities, your regulators and your target date with you. No proposal until the scope is agreed.

    Sources

    1. KOLAS accreditation of calibration and testing laboratories (KATS) — kats.go.kr (accessed 8 Oct 2026)
    2. ILAC mutual recognition arrangement, KOLAS signatory entry — ilac.org (accessed 8 Oct 2026)
    3. KOLAS accreditation scheme pages — knab.go.kr (accessed 8 Oct 2026)
    4. Korea Laboratory Accreditation Scheme (KOLAS), run by the Korean Agency for Technology and Standards (KATS) — kats.go.kr; knab.go.kr; ilac.org (accessed 8 Oct 2026)

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