ISO 2078:1993

Specifies a system of designating textile glass yarns based on their linear density expressed in the Tex System. The designation of a yarn consists of following elements: Type of glass used; type of yarn (continous or staple fiber); nominal diameter of fiber; linear density, direction, amount of twist and number of components. The definitions and rules of the singel-to-fold designation given in ISO 1139 are applied to these textile glass products.