OEKO-TEX Standard 100 is one of the most widely cited textile safety certifications globally. It does not test color fastness, fabric weight, or yarn count. It focuses on one question: does this fabric contain chemical substances that should not be there.
Hengtong completed its OEKO-TEX Standard 100 certification renewal this year. For buyers sourcing workwear or corporate uniforms, here is what this certificate means in practice.
1. What the 100+ Test Parameters Actually Cover
The OEKO-TEX Standard 100 test list is not a fixed 100 items. It is dynamically adjusted based on regulatory updates and currently covers more than 100 parameters. The core categories include:
- Legally regulated substances: formaldehyde, cleavable carcinogenic arylamines, heavy metals (lead, cadmium, chromium, etc.)
- Non-regulated but harmful substances: phthalates, chlorinated phenols, organotin compounds
- Dyeing and processing residues: color fastness, pH value, volatile compounds
These parameters are updated annually by the OEKO-TEX International Association based on global regulatory changes. The 2026 version added limit requirements for two additional pesticide residues.
2. Four Product Classes — Where Does Workwear Fit
OEKO-TEX divides textiles into 4 classes based on skin contact level:
- Class I (baby articles): products for children under 3, strictest limits
- Class II (direct skin contact): shirts, underwear, polo shirts
- Class III (non-direct skin contact): jackets, coats, suits
- Class IV (decoration): curtains, carpets, etc.
Most corporate workwear and uniforms fall into Class II or III. Hengtong's certification scope covers both Class II and III, meaning fabrics for both direct-skin workwear and outer-layer garments are within the tested range.
3. Three Practical Impacts for Buyers
1. Simplified Incoming Inspection
Fabric that has passed OEKO-TEX certification has already been screened for harmful substances by a third party. If your internal quality standards include incoming inspection requirements for formaldehyde, pH, and color fastness, you can reference the OEKO-TEX report directly instead of testing every batch yourself.
2. Compliance Documentation in One Step
Some procurement contracts require suppliers to provide fabric safety documentation. For example, school uniform procurement needs to meet relevant GB 18401 requirements, and medical workwear needs to meet antibacterial standards. OEKO-TEX reports cover most GB 18401 indicators and can be attached directly to bid or acceptance materials as part of compliance documentation.
3. International Client Mutual Recognition
OEKO-TEX is an international certification widely accepted in export orders. Hengtong's foreign trade clients — including European and North American markets — can accept this report during factory audits without requiring duplicate testing.
4. Certificate Validity and Renewal Rules
OEKO-TEX Standard 100 certification is valid for 12 months. Before expiration, new fabric batches must be submitted for re-testing. Hengtong renews annually, sending 2 meters each of 3-5 routine fabric varieties (polyester-cotton blends, pure cotton, flame-retardant fabrics, etc.) for testing.
Renewal is not a formality. If the fabric supplier changes dye or finishing agent formulations, even if the fabric name stays the same, test data may differ. Renewal reports specify the exact fabric batches and composition parameters tested.
5. How to Use This Certificate in Procurement
If you are a procurement manager, consider integrating OEKO-TEX reports into these 3 stages:
- Supplier qualification: Use OEKO-TEX certification as a scoring item alongside ISO 9001 and other system certifications
- Contract annex: Specify in the technical requirements that "fabric must come with a valid OEKO-TEX Standard 100 report" and agree on the product class (II or III)
- Delivery inspection: Verify that the fabric composition and batch number on the report match the delivered fabric
Hengtong's OEKO-TEX certificate number and test reports can be requested through the contact page, or you can view Hengtong's complete list of qualification documents on the company profile page. If you are currently evaluating suppliers, OEKO-TEX certification serves as a quick indicator of fabric safety. However, it does not replace functional and color-fastness testing — those still require CNAS laboratory or other third-party reports.
