Put the activated carbon into water and observe whether there are bubbles. If there are a large number of bubbles, the surface can still be used. If there are no bubbles, it indicates that the activated carbon has been saturated and adsorbed a lot of harmful substances, which needs to be replaced in time. What is activated carbon? Activated carbon is a kind of black porous solid carbon. It has developed pore structure and strong adsorption performance. It is an industrial adsorbent with a wide range of uses.
Activated carbon is generally used for filtration and decolorization. At home, activated carbon can purify the air and remove harmful substances, so it is deeply loved by many families.
Activated carbon can absorb many harmful substances, so it should be replaced in time after use for a period of time to avoid secondary pollution. （ZenMePanDuanHuoXingTanBaoHeLe）