The Exchange Test Method

A-17: Water Repellency: Spray Test

Issue Date: 30 Apr 1993

Revision Date: 09/30/2011

  1. PURPOSE AND SCOPE:

    To measure resistance of fabrics (or garments) to wetting by water. Applicable to any textile fabric, which may or may not have been given a water resistant or water-repellent finish. This test method is not intended for use in predicting the probably rain penetration resistance of fabrics, since it does not measure rain or water penetration.
  2. PRINCIPLE:

    Water sprayed against the taut surface of specimen under controlled conditions produces a wetter 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.
  3. REFERENCE:

    AATCC Test Method 22-2010, Water Repellency: Spray Test.
  4. APPARATUS:

  5. PROCEDURE:

  6. REPORT:

    Report the rating number corresponding to Standard Spray Test Rating Chart as follows:

    Rating Evaluation
    100 No sticking or wetting of upper surface
    90 Slight random sticking or wetting of upper surface
    80 Wetting of upper surface at spray points
    70 Partial wetting of whole of upper surface
    50 Complete wetting of whole of upper surface
    0 Complete wetting of whole upper and lower surfaces
  7. NOTE:

    7.1 The AATCC Spray Tester Unit consisting of hoop, nozzle, funnel, stand and Spray Test Rating Chart is available from AATCC, P.O. Box 12215, Research Triangle Park, NC 27709 tel: 919-549-8141; fax: 919-549-8933; e-mail: orders@aatcc.org.