EN ISO 1833-5 Textile - Quantitative Chemical Analysis - Part 5: Viscose - Copper or Blends of Modal and Cotton Fibers (Method Using Sodium Zincate) Test

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of EN ISO 1833-5 testing. EN ISO 1833-5 specifies a method using sodium zincate to determine the percentage of viscose, copper or modal fiber after removal of the fiberless material in textiles made from binary blends of viscose or most of the copper or modal available.

Where a copper or modal fiber is present, a preliminary test should be done to see if it dissolves in the reagent.

The method is not applicable to blends where cotton is subject to extreme chemical degradation, or where viscose, copper or modal fiber is not fully soluble due to the presence of certain permanent finishes or reactive dyes that cannot be completely removed.

Viscose, cupro or modal fiber is dissolved from a known dry mass of the mixture with sodium zincate solution. The residue is collected, washed, dried and weighed; Its adjusted mass is expressed as a percentage of the dry mass of the mixture. The percentage of viscose is found by the difference of cupro or modal fiber.

EUROLAB assists manufacturers with EN ISO 1833-5 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.