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Spray Rating Tester
The device uses a spray method to determine the resistance of any fabric, whether or not it has been treated with waterproof or water-repellent properties, to surface wetting by water.
A test specimen, mounted on a pulley and positioned at a specific distance and angle of 45° beneath a central spray nozzle, is sprayed with a specific volume of distilled or fully deionized water.
The degree of wetting is determined by comparing the appearance of the test specimen with defined standards and photographs.
Standards
ISO 4920, BS EN 24920, BS 3702, AATCC 22, M&S P23, NEXT 23