How to identify the quality:
1. see the hygroscopicity:
Is a towel you put it here we casually with water droplets, water immediately to the towel, no sliding, no spread bad towel, it form the water, not permeability, and the water slide down soon,
we say this is not a good towel, because of its softness is too much, not hygroscopic.
2. See if the color of the towel has faded Pure cotton towel is generally dyed with reactive dyes,
dye molecules and cellulose molecules covalent bond, so that the dye fixed on the fiber in the reaction process, a part of the dye and fiber combined, but also a part of the dye hydrolysis,
adsorption on the fiber surface, but no covalent bond, easy to fall offWhen dyed dark towel, there are a lot of hydrolysis of dye adsorption on the fiber, it is difficult to wash,
so first washing with decoloring phenomenon, this is unavoidable If first washing towel rub off more light color or dark towel washing still rub off many times,
is the dye is unqualified or dyeing process caused by inaccurate, belongs to the unqualified products
