Nickel Release from Textile Metal Components
topic
Nickel release testing immerses metal components in artificial sweat solution at pH 6.5 for one week at 37 degrees Celsius, measuring dissolved nickel concentration in the extract by ICP-OES or AAS; the REACH Annex XVII limit of 0.5 micrograms per square centimetre per week for skin-contact articles governs compliance assessment of buckles, buttons, rivets, and zip pullers.
Role
Prevents contact allergic dermatitis caused by nickel sensitisation from prolonged skin contact with metal textile accessories, ensuring compliance with EU nickel release regulations that apply to all articles with direct and prolonged skin contact including garment fastenings and decorative metallic elements.