What is OEKO-TEX Certification? A Buyer's Complete Guide

What is OEKO-TEX?

OEKO-TEX is an independent testing and certification system for textile products. Founded in 1992 by the Austrian Textile Research Institute (ÖTI) and the German Hohenstein Institute, it has grown into the world's most recognized label for textile safety and sustainability.

OEKO-TEX tests textiles for harmful substances and certifies that products are safe for human health. The system covers every stage of the supply chain — from raw fiber to finished garment.

The OEKO-TEX Standards Explained

OEKO-TEX offers several different certifications, each covering different aspects:

OEKO-TEX Standard 100

The most widely recognized certification. It tests finished textile products for harmful substances including pesticides, heavy metals, formaldehyde, pH value, color fastness and more. Products are divided into four product classes based on intended use:

• Class I: Products for babies and toddlers under 3 years — strictest limits
• Class II: Products with direct skin contact (underwear, bedding, t-shirts)
• Class III: Products without direct skin contact (outer garments, curtains)
• Class IV: Decoration and furnishing materials

OEKO-TEX MADE IN GREEN

A product label that combines OEKO-TEX Standard 100 testing with verification of sustainable and socially responsible manufacturing. Includes a unique product ID that allows consumers to trace the supply chain.

OEKO-TEX STeP (Sustainable Textile & Leather Production)

A factory-level certification covering chemical management, environmental performance, social responsibility and quality management. Relevant for buyers evaluating supplier manufacturing practices.

OEKO-TEX LEATHER STANDARD

Specific certification for leather products covering harmful substances in tanning and finishing processes.

How to Verify OEKO-TEX Certification

All valid OEKO-TEX certificates can be verified on the OEKO-TEX website using the certificate number provided by the supplier. Key verification steps:

• Request the certificate number and issuing institute from your supplier
• Verify at oeko-tex.com/certificate-check
• Confirm the certificate covers the specific product you are sourcing
• Check the certificate expiry date — certificates are valid for 12 months

Common OEKO-TEX Misconceptions

• "My supplier says they are OEKO-TEX certified" is not enough — always ask for the certificate number and verify independently
• Yarn certification ≠ fabric certification: Each stage of production requires its own certification
• OEKO-TEX ≠ organic: Standard 100 tests for harmful substances but does not certify organic fiber origin — that is GOTS

Which Certification Do You Need?

• Baby products: OEKO-TEX Standard 100 Class I — mandatory for most EU and US retailers
• Underwear and bedding: Standard 100 Class II
• Sustainability story for consumers: MADE IN GREEN label
• Factory audit for supply chain compliance: STeP certification

Finding OEKO-TEX Certified Suppliers

textilefair.com allows buyers to browse manufacturers by certification. Many listed suppliers carry OEKO-TEX Standard 100 certification — verifiable directly through the OEKO-TEX database. Use the platform's search filters to narrow down certified suppliers by country and product category.