Oeko-Tex Standard 100 fabric testing for harmful substances
Oct 10, 2026
Short answer: Oeko-Tex Standard 100 fabric testing means that a finished textile is sent to an independent institute, which measures selected substances that can be unwanted in clothing. If the limits are met, the product may carry the label. The test says nothing about fit or durability.
What Oeko-Tex Standard 100 fabric testing means
Oeko-Tex Standard 100 fabric testing is a laboratory test of textiles. The institute examines samples of fabric, thread, buttons and other parts and compares them with a list of substances and limit values. If the result is in order, a certificate is issued, and the company may use the label together with the certificate number.
Which kinds of substances are looked for
It concerns substances that can remain in a textile after dyeing and finishing, for example certain dyes and metals. The list is long, and the limits are set to reduce the risk of skin contact. You do not need to know it, but it is good to know that the test is concrete and measurable.
Who tests and who pays
The test is carried out by independent institutes linked to Oeko-Tex. The company that wants the label orders and pays for the test. That is normal for certifications. You can always look up the certificate number on the Oeko-Tex website and see who holds it. Look at bamboo clothing for men for everyday wear.
How long a certificate lasts
A certificate is valid for a limited period and has to be renewed if the company wants to keep using the label. That means the test is not a one-off. New batches of textiles can be tested again. So check that the number is still valid when you look it up.
What the test cannot tell you
The label says nothing about how well a garment fits, how soft it feels or how it holds up after many washes. It does not say how the raw material was grown or spun either. Use the result as one piece of information and judge the rest yourself: material, cut, seams and care.
How to use the label in the shop
Look for a number and an institute next to the label. If there is only a logo without a number, ask for it. If you are in doubt, ask for the answer in writing. It does not take long and gives you something to go on if you want to compare two garments.
Care after you buy
The test does not change the care instructions. Wash at the temperature on the label and avoid strong softener, which can make soft fibres stiff. Dry clothes flat or hanging without direct heat. Look at long sleeve models and bamboo socks if you want everyday clothing with simple care.
Frequently asked questions
What is Oeko-Tex Standard 100 fabric testing?
A laboratory test of textiles in which an independent institute measures selected substances. If the limits are met, the product may carry the label with a certificate number.
Who pays for the test?
The company that wants to use the label orders and pays for it. You can always look up the certificate number and see what has been tested.
Can I rely on clothing being safe if it has the label?
The label shows that the textile has been tested to the standard. If you have sensitive skin, talk to your doctor and try new clothing carefully.