Air purification activated carbon: 1, even the best air purification activated carbon products, people in the closed room for too long, but also easily lead to some illness. For users, one should always pay attention to the ventilation window, usually pay more attention to exercise. 2, the amount, the principle is better, greater use of the more harmful gases adsorbed, especially the elderly or pregnant women at home with children but also to multi-purpose! But it should be the most suitable from the economic considerations of the amount of carbon air purification . 3, formaldehyde emissions increase with the temperature and humidity increases. Experiencing hot and humid weather, that the use of activated carbon, the indoor formaldehyde concentration at this time there will be a rebound, but do not worry, air purification activated carbon in a few days to resume normal adsorption. Activated carbon air purifier purchase: 1, the same weight, the greater the volume, the stronger in order to improve the adsorption capacity of activated carbon adsorption, and only as much as possible on the manufacture of activated carbon pore structure, porosity, the more carbon the more crisp, the relative density will also more light, so a good touch on activated carbon will be relatively light weight packaging in the same circumstances, good performance activated carbon bulky than many inferior. 2, carbon coconut shell carbon, iodine is a good high carbon. Purge gas relies on activated carbon adsorption capacity, there is an important indicator adsorption capacity - iodine, iodine value, the stronger the higher adsorption capacity. Fried coconut shell carbon is relatively hot, but some or technology, but without the activation of coconut shell charcoal iodine may not be able to reach 500. The sea air purifier Xin dedicated senior husk carbon iodine up to 800-1200, the adsorption capacity of leading brands of air purifiers carbon effect. In addition to some of the effects of certified brands, we buy most other carbon air purification, it should ask the seller to produce iodine inspection reports. 3, carbon package permeability heavy carbon package put on the lips blowing gas through if you can easily carbon package, indicating that the carbon package of air through the good. If you feel blowing carbon package does not move, the air is difficult to pass, and that it contained no matter how much carbon is also difficult to play the role. Itself as a passive adsorption of products, air must be able to freely penetrate deep into the carbon package, carbon package can play a good air purifier adsorption. In theory, the carbon package ripped directly into the charcoal tray may be the best way of air through sex, of course, in this way have an impact on environmental health.