1. Water absorption:
Pure cotton hotel towels have good water absorption. Take a pure cotton towel and gently put it in the water. It absorbs water quickly and sinks quickly. After taking it out, wring it out, hang it vertically, and it will become pure cotton without water drops. The polyester-containing towel absorbs water slowly, and after it is taken out and wrung out, water drops will hang vertically.
2. Appearance:
Pure cotton towels have good whiteness, and the towels are pure in color, while towels containing polyester are not good in whiteness, and the color is gray. This is easy to distinguish when put together.
3. Combustion method:
Take a fiber from different towels and burn it with a lighter. Pure cotton has a natural ash smell. After blowing out the fire, the sparks will not go out, and the smoke will be slightly white. Containing polyester, there will be a solid like plastic after burning. , burns rapidly and has a peculiar smell. After blowing out the fire head, it goes out immediately.
4. The most fundamental way is to take a few fibers and put them under the purple light. The color like banknotes is undoubtedly contained.