AATCC—the American Association of Textile Chemists and Colorists— is a 501(c)(6) not-for-profit professional association that provides test method development, quality control materials, educational development, and networking for textile and apparel professionals throughout the world. The American Association of Textile Chemists and Colorists (AATCC) develop the test methods the textile industry use to ensure product quality. AATCC is the world's leading not-for-profit association serving textile professionals since 1921. AATCC, headquartered in Research Triangle Park, N.C., USA, provides test method development, quality control materials, and professional networking for thousands of members in 60 countries throughout the world. Activities AATCC has developed more than 200 textile-related standards, including test methods, evaluation procedures, and monographs. These standards are published each year in the AATCC Technical Manual. All standards are developed and updated by volunteer members, through research committees. All industry stakeholders may participate in the standards-development process. Before a standard is published in the AATCC Technical Manual, it must be unanimously approved by voting members of the responsible research committee and the Technical Committee on Research (TCR). During the first three years, each new standard is reviewed annually, at which time, on recommendation of the research committee and approval by TCR, it may be reaffirmed, revised, or withdrawn. After the first three years, each standard is reviewed at least every five years. The content of many AATCC methods form the basis of equivalent ISO methods. AATCC serves as secretary for the US Technical Advisory Committee (TAG) to the American National Standards Institute (ANSI) for International Organization for Standardization (ISO) textile test method development. (For many years, AATCC was also secretary of ISO TC38 SC1 and SC2.) AATCC provides test method training at its laboratories, at members’ facilities, online, and in more than 10 countries around the globe. AATCC also offers test method proficiency programs and quality control products for use in conducting its test methods. AATCC publishes a bi-monthly magazine, AATCC Review, containing technical articles, feature articles, and news for textile professionals. The Association also publishes the AATCC Journal of Research, a bi-monthly online peer-reviewed research journal with a broad scope. The AATCC News, a newsletter published twice per month, is distributed by e-mail. Other publications include a website, AATCC Blog, books, and training videos. The association conducts educational programs, such as workshops, seminars, conferences, webinars, and online instruction, on various aspects of textiles. Proficiency programs are available for labs to participate in. Each