Oeko-Tex Standard 100 is a textile certification system, which was introduced in 1992 by Oeko-Tex association (it consists of 18 independent institutes which research and test textile products and develop certification rules). If an article complies with Oeko-Tex Standard 100, it has successfully passed severe laboratory tests developed by Oeko-Tex association.
Yarns, fabrics and garments with Oeko-Tex Standard 100 certificate are safe for you health; they were not treated with harmful chemicals like azo colourants, formaldehyde, cadmium, nickel, pentachlorophenol, etc. Of course, if a fabric does not have this certificate, it does not mean that it is dangerous. But it can be – especially if you see phrases like ‘easy iron’, ‘wrinkle free’, ‘non-iron’, etc.
Here are some mills and brands that offer fabrics which comply with Oeko-Tex Standard 100: Albini, Alumo, Canclini, Cariaggi, David & John Anderson, Grandi & Rubinelli, Leggiuno, Mileta, Monti, Ronghi, S.I.C. Tess, Testa, Thomas Mason, Tootal, Vitale Barberis Canonico.