2021 AATCC Mid-Year Supplement: Little List, Mighty Changes

2021 AATCC Mid-Year Supplement: Little List, Mighty Changes

RESEARCH TRIANGLE PARK, N.C., USA, July 6, 2021—The 2021 AATCC Mid-Year Supplement to the AATCC Manual of International Test Methods and Procedures includes four revised, one editorially revised, and two new standards.

RA63’s TM35 has been updated to clarify its reference images and align its history section with the AATCC style guide.

RA36 has included three standards related to color evaluations.  For those active in making color decisions, these updates for EP7, EP9, and EP14  are not to be missed.

RA31 has introduced a new odor method with the addition of TM211.  This amazing new method provides a quantifiable means for evaluating the reduction of odor generated from textiles treated with antibacterial finishes.

To continually support the laundering needs of the testing community, RA88 has updated LP1 to provide the use of a self-fabric as Ballast Type 4. For many, this is a game-changer.

For those following the emerging trends in smart-textiles, RA111 is excited to add a 4-point probe option to EP13.

These all are highly anticipated additions that will help users stay at the forefront of testing and product innovation.

Please purchase the 2021 AATCC Mid-Year Supplement to get a copy of the latest standards available from AATCC.  If you want to be part of the exciting work being done to bring standards to the industry, please join an AATCC research committee.

If you need any testing support products, be sure to review the AATCC products page.  Information on these and more can be found at


Method Title Change Committee
EP7-2021 Evaluation Procedure for Instrumental Assessment of the Change in Color of a Test Specimen


Revised in 2021 to remove table option and restructure calculations for clarity




EP9-2021 Evaluation Procedure for Visual Assessment of Color Difference of Textiles


Revised in 2021 to update steps in Table III and to align with the AATCC style guide




EP13-2021 Evaluation Procedure for Electrical Resistance of Electronically Integrated Textile


Revised in 2021 to add 4-point measurement




EP14-2021 Evaluation Procedure for Small Color Differences






LP1-2021 Laboratory Procedure for Home Laundering: Machine Washing


Revised 2021 to update the tables and add Type 4 Ballast




TM211-2021 Test Method for the Reduction of Bacterial Odor on Antibacterial-Treated Textiles






TM35-2018e2 Test Method for Water Resistance:  Rain


Editorially Revised in 2021 to remove excess wording from Figure 2 and to add history





About AATCC: Founded as the American Association of Textile Chemists and Colorists (AATCC), the Association continues to evolve to meet the needs of those in the ever-changing textile, apparel, and materials industries. AATCC has served textile professionals since 1921. Today, the Association provides test method development, quality control materials, education, and professional networking for a global audience.

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