The purpose of this standard is to provide guidelines for carrying out comparative tests on laundry products, so that they reflect the real effectiveness of the products that can be used by consumers. This standard gives the details of the various parameters to be considered, indicates the significance and importance of each of these parameters, and allows establishing, from them, appropriate comparative test methods that will give a valid estimate of the effectiveness. of a laundry product when two or more products are compared during the same test series.