What Is SGS?
SGS (Société Générale de Surveillance) is a Swiss multinational company and one of the world's largest inspection, verification, testing, and certification organizations. Founded in 1878, SGS operates in over 140 countries and employs more than 90,000 people.
In the ISO certification world, SGS is one of the most recognized certification bodies (also called registrars). They conduct audits and issue ISO certifications for standards including ISO 9001, ISO 14001, ISO 45001, ISO 50001, and many others.
What Is a Certification Body?
A certification body is an organization authorized to assess whether a company's management system meets the requirements of a specific ISO standard. After a successful audit, the certification body issues an ISO certificate.
Major ISO Certification Bodies Worldwide
| Certification Body | Headquarters | Notable For |
|---|---|---|
| SGS | Geneva, Switzerland | Largest testing and certification company globally |
| Bureau Veritas | Paris, France | Strong in marine, construction, and oil & gas |
| TÜV (various) | Germany | Technical inspection and safety certification |
| DNV | Oslo, Norway | Maritime, energy, and healthcare |
| BSI (British Standards Institution) | London, UK | The organization that created the first quality standard |
| Lloyd's Register | London, UK | Maritime heritage, now broad certification portfolio |
| Intertek | London, UK | Consumer goods, chemicals, and electrical |
| DEKRA | Stuttgart, Germany | Automotive and industrial safety |
Accreditation vs. Certification
These terms are often confused:
- Certification is what your organization receives from a certification body (e.g., SGS certifies you to ISO 9001)
- Accreditation is what the certification body receives from a national accreditation body (e.g., SGS is accredited by SAS, the Swiss Accreditation Service)
Accreditation ensures the certification body is competent and impartial. Always verify that your chosen certification body is accredited by a recognized national accreditation body:
- ACCREDIA (Italy)
- DAkkS (Germany)
- UKAS (United Kingdom)
- ANAB (United States)
- COFRAC (France)
- ENAC (Spain)
What Does an ISO Auditor Do?
ISO auditors employed by certification bodies:
- Review documentation — Assess QMS/EMS documentation before the on-site visit
- Conduct on-site audits — Interview staff, observe processes, review records
- Identify nonconformities — Document findings where requirements are not met
- Report findings — Provide a detailed audit report
- Recommend certification — Based on audit evidence (the final decision is made by the certification body, not the individual auditor)
ISO 9001 Lead Auditor
A lead auditor is the senior auditor responsible for managing the audit team and the overall audit process. To become an ISO 9001 lead auditor, you typically need:
- Completion of a recognized lead auditor training course (e.g., IRCA-certified)
- Relevant work experience in quality management
- Experience as an auditor on multiple audits
- Knowledge of the specific industry being audited
How to Choose the Right Certification Body
1. Verify Accreditation
Ensure the body is accredited by a national accreditation body that is a member of the IAF (International Accreditation Forum).
2. Check Industry Experience
Some certification bodies specialize in certain sectors. Choose one with experience in your industry.
3. Compare Pricing
Audit fees vary significantly between certification bodies. Get at least 3 quotes. However, don't choose solely on price — the quality of the audit matters more.
4. Consider Geographic Coverage
If you have multiple sites or operate internationally, choose a certification body with offices in your operating regions.
5. Evaluate the Audit Approach
Some bodies are more prescriptive; others are more collaborative. Request references from companies similar to yours.
SGS vs. Other Certification Bodies
| Factor | SGS | TÜV | Bureau Veritas |
|---|---|---|---|
| Global reach | 140+ countries | Primarily Europe | 140+ countries |
| Industry focus | Broad coverage | Technical/automotive | Industrial/marine |
| Brand recognition | Very high | Very high (Europe) | High |
| Pricing | Mid-premium | Mid-premium | Competitive |
| Digital tools | Online portals | Varies by entity | Online portals |
Preparing for Your Certification Audit
Regardless of which certification body you choose:
- Complete at least one internal audit cycle before the certification audit
- Close major nonconformities identified during internal audits
- Ensure management review is completed and documented
- Verify documented information is current and controlled
- Brief your team — everyone should understand the quality policy and their role in the QMS
AI-powered tools like isofy can help you pre-screen your documents against ISO requirements before the auditor arrives, reducing the risk of surprises during the certification audit.
Conclusion
SGS and other major certification bodies play a critical role in the ISO ecosystem. Understanding how certification bodies work, what accreditation means, and how to choose the right partner ensures your certification journey is efficient and credible. Whether you choose SGS, TÜV, Bureau Veritas, or another accredited body, the key is thorough preparation and a genuinely effective management system.