

Cleaning the wool in the above manner removes the natural faeces, but some mixed metals, such as vegetable matter, still remain in the wool. Therefore it also needs to be cleaned. This work is done by soaking the wool in a mild solution of sulfuric acid ranging from 3° to 4° bome and then heating it with hot air to 250° Fahrenheit, as the acid has no harmful effect on the wool. The thorny hairs of seeds etc. get burnt by the acid, so they separate. Get Cotton yarn online in India.





