What OEKO-TEX Standard 100 actually covers

OEKO-TEX Standard 100 appears on a large share of packs in this category, and it is frequently misunderstood in both directions: buyers assume it certifies more than it does, and some suppliers imply it covers things it never tests. Here is what the certificate actually says, what it does not say, and how to read one before it goes into an RFQ.

What the standard is

Standard 100 is an independent testing and certification scheme for textile articles, covering raw materials, semi-finished and finished products at every processing stage. Its subject is harmful substances: the scheme sets limit values for a long list of regulated and non-regulated chemicals and tests articles against them.

It is a voluntary, privately operated standard. That single sentence resolves most confusion: it is not law, it does not replace legal compliance, and a product can be fully legal in its market without holding it.

The four product classes

Certification is issued against one of four classes, and the class decides the strictness of the limits:

For an adult pad or pant, Class II is the normal target. A certificate issued for Class III does not tell you anything useful about the part that touches the body, and it is worth checking which class a supplier is actually showing you.

What it covers

• Limit values for a wide list of harmful substances, including formaldehyde, certain heavy metals, azo colourants, chlorinated phenols, phthalates and a set of allergenic dyes.
• Testing of the specific article, at a specific production site, under a specific certificate number.
• An annual renewal cycle, which means the certificate has an expiry date that matters.
• Optional additional modules for specific concerns, where the supplier has chosen to certify them.

What it does not cover

• Performance. Absorbency, leakage, fit, dryness, odour control and comfort are outside the scheme entirely.
• Biodegradability or compostability. Those are separate standards and separate tests; nothing in Standard 100 speaks to them.
• The whole factory. A certificate is issued for articles, not for a company. A site can hold certificates for some products and none for others.
• Legal compliance in your market. It is a testing scheme; REACH, the General Product Safety Regulation, labelling duties and extended producer responsibility are separate obligations that sit with the importer.
• Every component. Check the article description on the certificate against what you are buying. A certificate for the non-woven top sheet is not a certificate for the assembled pad.

How to read a certificate

Five fields decide whether the document is relevant to your order:

• Certificate number and validity dates. Expired certificates are the most common problem in a document pack.
• Article description. Should name a material or product that matches yours, not a general category.
• Product class. Should be Class II for body-contact components.
• Certificate holder. The name here is the legal entity that can be verified with the issuing institute. If it is not your supplier, ask why.
• Testing institute. The issuing body is named on the certificate and the number can be checked with them directly. This takes minutes and settles the question.

A certificate is a document about a material at a moment in time. It is not a property of the brand on the pack.

Where it fits in a buyer’s document pack

Treat Standard 100 as one line in a longer list, alongside REACH statements for the adhesive and any dyed components, a material composition declaration, and the labelling review for the destination market. It is strong evidence on chemical safety of the textile components and weak evidence on everything else.

If a supplier cannot produce a certificate for the exact article you are buying, that is not necessarily a refusal; it may mean the article is covered by an extension that has not been requested. Ask for the extension in writing, with the article description you intend to buy, and give the factory time to obtain it before artwork goes to print.