You can tell a lot about a fabric by touch: texture, weight, finish. What it contains, such as residues from dyeing, surfactants from finishing, or chemical compounds left in the weave after manufacture, you can't. Those are invisible, and without independent testing there's no way to check them.
OEKO-TEX Standard 100 is a testing and certification program designed to make those invisible properties checkable.
What it is
OEKO-TEX Standard 100 is an independent certification for textiles. It tests for harmful substances at every stage of production, from raw fiber to finished article. It was set up in 1992 by the OEKO-TEX Association, a group of research and testing institutes. It started with 100 substances and now covers over 1,000, updated every year as new substances are identified and regulation develops.
Testing is done by an accredited independent lab, not the manufacturer. Every part of the certified article is tested, not just the main fabric: threads, zips, buttons and anything else in the finished product must each pass. A certificate lasts 12 months and has to be renewed, with fresh testing, every year.
What it tests for
The full list runs to over 1,000 substances. Among the categories it covers:
- Formaldehyde: used in finishing to reduce creasing and improve durability. It's a well-documented irritant and a known carcinogen at high concentrations. The standard sets strict limits on residual formaldehyde, with the tightest limits for products made for babies
- Heavy metals: including lead, cadmium and chromium VI, which can come from dyes and finishing chemicals
- Alkylphenol ethoxylates (APEOs): surfactants widely used in textile manufacturing. They break down into alkylphenols, which persist in the environment and disrupt hormones. Their use is restricted under EU REACH rules, and the standard tests for them wherever the fabric was made
- Perfluorinated compounds (PFCs): fluorinated chemicals historically used to make fabrics water- and stain-resistant. Concern about how they persist and build up in the environment has brought growing regulation worldwide, and the standard tests for them
- Pesticides: natural fibers can carry residues from farming, and the standard tests for a range of pesticides
- Allergenic and carcinogenic dyes: certain synthetic dyes, including those that can break down into carcinogenic aromatic amines, are banned in certified textiles
- pH: a skin-neutral pH is required for articles in close skin contact, because fabrics outside the acceptable range can irritate, especially with long contact
The standard also meets the requirements of EU REACH and the US Consumer Product Safety Improvement Act.
The four product classes
OEKO-TEX Standard 100 sorts certified products into four classes, based on how much skin contact they're expected to have:
- Class 1: products for babies and children under three. The strictest limits, for nappies, clothing and bedding in long, direct contact with a baby's skin
- Class 2: products in direct skin contact in normal adult use, such as underwear, bed linen and shirts
- Class 3: products with little or indirect skin contact, such as outerwear, jackets and upholstery
- Class 4: decorative and home textiles, such as curtains and furnishing fabrics
The class reflects how the product is used. A fabric that will be slept on, in long and close contact, is held to stricter limits than a decorative fabric that rarely touches skin.
Why yearly renewal matters
The yearly retest isn't a formality. OEKO-TEX reviews its list of restricted substances and their limits at least once a year, adding new regulation and research. Last year's certificate doesn't carry over: the fabric has to pass the updated standard.
What it doesn't cover
OEKO-TEX Standard 100 applies to the textile: the fabric, threads, hardware and other parts of the finished article. It doesn't apply to what's inside. A certified cover on a dog bed tells you about that cover. The foam, the liner and any other internal parts are separate materials that need their own independent testing.
A complete picture of any bed means looking at each part on its own terms.
What to look for
- Is the fabric independently certified? An OEKO-TEX Standard 100 label means the fabric, every thread and every piece of hardware has been tested for over 1,000 harmful substances by an accredited lab. A fabric described only as natural or performance has no equivalent outside check.
- Which class? The class tells you what level of contact it was tested for. A fabric your dog sleeps on every night should be tested for that kind of contact.
- Is the certificate current? Certificates expire after 12 months. One from a previous year may not reflect how the fabric is made now.
The KINNE Bed's polyester-linen cover is certified to OEKO-TEX Standard 100 and is PFAS-free.