First look at the density. The more pores there are in activated carbon, the higher its adsorption performance, the more brittle it is, the lower its relative density, the lighter it feels, and the larger its volume when it is packed with equal weight. It is recommended to buy activated carbon products with low density, light handle and large volume under the same weight.
Second, look at the size. The smaller the activated carbon particles, the larger the contact area with air and the larger the specific surface area, and the better the adsorption performance. However, the smaller the particles, the greater the loss in the crushing process, the more dust and the higher the cost. Therefore, in order to reduce costs, many manufacturers use large granular activated carbon, and its performance is of course not good. Generally, activated carbon with a particle size of about 0.5 mm not only meets the standard performance, but also ensures no pulverization and no pollution. It is suggested to choose activated carbon products with particle size of 0.42-0.85 mm