ISO 4920:2012规定了一种喷雾试验方法，用于测定任何可能或可能未进行防水或拒水整理的织物对水润湿表面的耐受性。 它不用于预测织物的抗雨水渗透性，因为它不测量水通过织物的渗透性。

ISO 4920:2012 specifies a spray test method for determining the resistance of any fabric, which might or might not have been given a water？resistant or water？repellent finish, to surface wetting by water. It is not intended for use in predicting the rain-penetration resistance of fabrics, since it does not measure penetration of water through the fabric.