OEKO-TEX Standard 100 socks: what a sock factory can and cannot certify
ANV Socks does not hold a factory-level OEKO-TEX certificate, and neither does any other sock factory. OEKO-TEX STANDARD 100 is issued against an article — a yarn, a fabric, a finished sock — never against a building or a company. Any supplier telling you their factory is OEKO-TEX certified has either misunderstood the scheme or is hoping you have.
What is real, and what most buyers are actually asking for, is article-level certification: yarn bought from a certified mill, the certificate copy travelling with your shipment, and finished-goods testing where your programme needs it. This page sets out exactly what that gets you, what the certificate document contains, and how to check a supplier claim yourself in under a minute.
Why the scope rule matters more than the logo
Textile certifications split into two families that buyers routinely mix up. Social-compliance audits look at a site — the people in it, the hours they work, the conditions they work in. Product certifications look at an article — what is in it and whether those substances sit below defined limit values. A factory can be audited. A sock can be certified. The two are not interchangeable, and a supplier who offers one when you asked for the other is not answering your question.
| Scheme | Issued against | Answers the question |
|---|---|---|
| OEKO-TEX STANDARD 100 | An article — yarn, fabric, finished sock | Is this product free of harmful substances? |
| SMETA / Sedex | A site | Are the people in this factory treated lawfully? |
| REACH / CPSIA | A shipment | Is this consignment legal to sell in this market? |
ANV publishes its site-level position separately, with reference numbers you can verify — LRQA SMETA 4-Pillar audits for 2025 and 2026 and an Intertek SQP assessment, all listed on the audits page. This page is only about the article side.
The three things ANV can actually supply
We buy the yarn lot from a mill holding a current OEKO-TEX STANDARD 100 certificate covering that yarn. This is specified at quotation stage, because it constrains which mills can run the order — it is not something that can be applied retroactively once knitting has started.
The mill certificate is issued to the mill, not to us and not to you. What we provide is the copy, with the number visible so that you or your importer can run it through Label Check independently. We do not ask you to take the claim on trust.
Certified input yarn does not automatically make the finished sock compliant — dyestuff, elastane, silicone grip print and packaging all enter after the yarn stage. Where a buyer programme needs it, we arrange third-party testing of the finished socks through SGS, Intertek or Bureau Veritas.
| Certificate number | SH005 194192 |
| Issuing institute | TESTEX AG, Swiss Textile Testing Institute |
| Product class | I — baby articles, the most stringent class in the scheme |
| Scope | Yarn in 100% cotton, 100% viscose, cotton/acrylic, or covered yarn of viscose/polyester/polyamide — bleached or dyed and finished |
| Valid until | 31 December 2026 |
Certified to Product Class I, the strictest tier in the scheme — which means the same yarn also satisfies Class II, the class socks normally fall under. It runs for infant socks and adult socks alike.
This is the certificate on file for our cotton and viscose programmes. Yarn in other fibres — merino, angora, recycled blends — runs on its own mill certificate, supplied with the order in the same way. Tell us the fibre at enquiry and we will send the matching certificate reference with the quotation.
The third point is the one that catches people out. A sock knitted from certified yarn is not automatically a certified sock, because everything added after the yarn stage — dye, elastane, silicone grip print, the polybag it ships in — is outside the yarn certificate. If your retailer requires a claim on the finished article rather than on the input, say so at quotation stage.
What the certificate document contains
An OEKO-TEX STANDARD 100 certificate is a single page. Six fields on it decide whether it is useful to you:
- Certificate number — the only part that can be independently verified. Everything else on the page is just print.
- Issuing institute — a member institute of the OEKO-TEX Association, such as Testex, Hohenstein or OETI.
- Certificate holder — the mill, converter or manufacturer it was issued to. For yarn-level certification this is the spinning mill, not the sock factory.
- Product class — I through IV. See the table below.
- Scope — the articles covered, worded narrowly. This is where most buyer disputes begin.
- Validity dates — normally a rolling twelve months. An expired certificate substantiates nothing.
| Class | Applies to | Relevance to socks |
|---|---|---|
| Class I | Babies and toddlers up to 3 years | Infant and toddler socks, bootiesMost stringent limit values in the scheme |
| Class II | Worn next to the skin over a large surface | Almost all adult and children socksThe default class for hosiery |
| Class III | Worn away from the skin | Not applicable to socksOuterwear, linings |
| Class IV | Furnishing and decoration materials | Not applicable to socksCurtains, upholstery |
Verify it yourself in under a minute. Take the certificate number to the OEKO-TEX Label Check tool and enter it — try ours, SH005 194192, before you take anything else on this page on trust. You will get back the holder, the class, the scope and whether it is currently valid. A PDF or a photograph proves nothing on its own — neither tells you whether the certificate is still in force.
Can you label your own socks OEKO-TEX?
Only if you hold a certificate issued in your own name, for that article, through an OEKO-TEX member institute. Buying from a factory that uses certified yarn is a prerequisite for that application — it is not a substitute for it, and it does not give you licence to put the label on a hangtag.
In practice most private-label buyers do not need their own certificate. They need to satisfy a retailer or importer compliance questionnaire, and a mill certificate covering the input yarn plus finished-goods test reports covering the shipment will usually do that. If you do decide to certify in your own name later, having the input chain already documented shortens the application considerably.
What to ask any sock supplier
This list works on us as well as on anyone else. If a supplier cannot answer all six in writing, the claim is decorative.
- 1 The certificate number, in writing — not a photograph of a certificate, not a logo on a slide deck.
- 2 The issuing institute. It should be a member institute of the OEKO-TEX Association.
- 3 The product class. Socks need Class II, or Class I for children under three.
- 4 The scope wording. Confirm it covers the specific yarn or article you are buying.
- 5 The validity dates. Certificates run roughly twelve months and lapse if not renewed.
- 6 Whether the certificate covers the yarn or the finished sock. These are different certificates and suppliers conflate them constantly.
Frequently asked questions
Does ANV Socks have OEKO-TEX certification?
Not at factory level, and neither does any other sock factory — OEKO-TEX STANDARD 100 is issued against an article (a yarn, a fabric, a finished sock), never against a facility. What ANV supplies is article-level: we buy from a mill holding certificate SH005 194192, issued by TESTEX, Product Class I, valid to 31 December 2026, covering yarn in 100% cotton, 100% viscose, cotton/acrylic and covered yarn of viscose/polyester/polyamide. You can verify that number yourself at oeko-tex.com/en/label-check before you talk to us. The mill certificate copy travels with your shipment documents, and finished-goods testing is arranged separately where a programme needs a claim on the sock rather than on the yarn.
What does an OEKO-TEX STANDARD 100 certificate actually contain?
Six fields matter to a buyer: the certificate number, the issuing institute (Testex, Hohenstein, OETI and other members of the OEKO-TEX Association), the certificate holder, the product class (I to IV), the scope — the exact articles covered, worded quite narrowly — and the validity dates, normally a rolling twelve months. The scope line is where most buyer disputes start, because a certificate covering combed cotton yarn does not automatically cover the finished sock knitted from it.
Which OEKO-TEX product class applies to socks?
Socks sit next to the skin over a large surface area, so they normally fall under Product Class II. Socks for babies and toddlers up to three years of age fall under Product Class I, which carries the most stringent limit values in the scheme. A certificate issued for Class III or IV does not cover a sock — that is a scope mismatch worth catching before you place an order rather than after.
How do I verify a supplier OEKO-TEX certificate myself?
Take the certificate number to the OEKO-TEX Label Check tool at oeko-tex.com/en/label-check and enter it. The tool returns the product class, the scope and whether the certificate is currently valid — note that it does not disclose the holder, so verifying a number tells you the certificate is real without exposing whose mill it is. It takes under a minute and it is the only verification that means anything — a PDF or a photograph of a certificate proves nothing on its own, since neither shows you whether the certificate is still in force.
Can I put an OEKO-TEX label on my own socks if my factory uses certified yarn?
No. Certified input yarn is a prerequisite, not a licence. To label your own finished product you have to hold a certificate issued in your own name for that article, applied for through an OEKO-TEX member institute. What certified yarn gets you is the substantiation for a compliance claim to your retailer or importer, and a much shorter path to your own certification if you decide to pursue it, because the input chain is already documented.
Does OEKO-TEX certified yarn cost more or add lead time?
It narrows the mill list, which is what moves cost and schedule rather than the certification itself. On common constructions — combed cotton, micro nylon, elastane — certified mills are widely available and the practical impact is small. On unusual yarns or unusual colours the certified pool is thinner, so ask for the yarn quotation and the mill certificate before you approve the sample, not after.
Is OEKO-TEX the same as REACH or CPSIA compliance?
No, though they overlap. OEKO-TEX STANDARD 100 is a voluntary certification scheme covering a long list of harmful substances. REACH is EU law and CPSIA is US law, both mandatory in their markets and both proven per shipment by third-party lab testing of the actual goods. A sock can hold an OEKO-TEX certificate and still need CPSIA testing for the US children’s market. ANV arranges order-level CPSIA, REACH and EN 14682 testing through SGS, Intertek or Bureau Veritas separately from any OEKO-TEX documentation.
Tell us the construction and the market it ships to, and we will come back with the yarn quotation and the mill certificate reference together, so your compliance team can verify it before you approve the sample. Minimum order is 2,000 pairs per design. Sampling is USD 300 per design.
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