The Art of Testing: Water Repellency ~ A Visual Guide to Performing AATCC Test Methods

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By Garry Atkinson, AATCC Technical Associate; Featuring illustrations by Garry Atkinson Instructions adapted from AATCC TM 22-2017e Water Repellency: Spray Test

About TM22-2017e

AATCC TM22 is often used as a quick, low cost way to screen the water repellency of a fabric.

This test method is applicable to any textile fabric, which may or may not have been given a water-repellent finish. It measures the resistance of fabrics to wetting by water. It is especially suitable for measuring the water-repellent efficacy of finishes applied to fabrics.

Water sprayed against the taut surface of a test specimen under controlled conditions produces a wetted pattern, whose size depends on the relative repellency of the fabric. Evaluation is accomplished by comparing the wetted pattern with pictures on a standard chart.

Supplies for Conducting AATCC TM22-2017e

AATCC TM 22 Water Repellency: Spray Test https://members.aatcc.org/store/tm22/

Purchase the testing supplies that you need to conduct AATCC TM22 efficiently at the AATCC Online Store https://members.aatcc.org/store/  in the Water Repellency section.

Items for conducting AATCC Test Method 22:

• 78385A: Spray Tester
• 78387A: AATCC Photographic Spray Test Evaluation Scale
• 78388A: Specimen-Mounting Hoop for Spray Tester
• 78911A: Spray Tester Nozzle

AATCC provides a range of products for your textile-related needs. We have publications on a variety of subjects, as well as the AATCC Manual of International Test Methods and Procedures. We also offer a wide selection of testing aids and materials suitable for your QC testing needs. In addition, we provide educational resources, proficiency testing programs, and UV subscription services.