The Test is especially suitable for measuring the water-resistant or water-repellent efficiency of finishes applied to fabrics particularly plain-woven fabrics. It is not intended to predict the rain penetration resistance of fabrics, since it does not measure penetration of water through the fabric.

 

Before testing is carried out, the specimen is conditioned for at least 24hr in the standard atmosphere for testing textiles. In the Spray Test, a specified volume of distilled water is sprayed on a Test specimen, which has been mounted on a ring and placed at an angle of 45°, so that the center of the specimen is 150mm below the spray nozzle.The Spray rating is determined by comparing the appearance of the specimen with AATCC & ISO Spray Test Rating Chart.