In wool or any other rug, Perez should be provided with fresh and pure materials. There are different ways for the sex of Perez and the net level of those, including that in the wool carpets, at least three grams of threads are placed in the proper chamber, putting the sample in the temperature of 105-110°C later out and in the drying machine, then weighing it down and replicating it to 10 percent of the weight loss. They reject the solution from a straight line with acetic acid and hot water, dry the remainder, and if the silk bar is pure, it will all be solved in profit. The net loss rate is “5 percent.” In order to detect old or synthetic wool in the rug, a microscope can be used.