Purchase and use of activated carbon masks
The simple activated carbon respirator is mainly used for the operation of chemicals. The chemical gas content in the air of the workplace reaches the national standard and is well ventilated. (After environmental protection, the filter box with a filter box should be used in places exceeding the standard). It consists of four layers, which are divided into spunbonded cloth, activated carbon cloth (which can filter and purify odor), high-efficiency filter cloth (this is an electrostatically treated filter layer, which can effectively prevent the invasion of bacteria and dust) and spunbonded cloth. The main function of the activated carbon filter layer is to adsorb organic gases, malodors, and toxic dust. It is not used for filtering dust and is suitable for oily, silk screen printing and other volatile chemicals.
The correct use of activated carbon mask: 1. Pull the mask down and pull it to open the fold; 2. The slightly black side faces outward, the pale white (elastic webbing) side faces inward; 3. The nose clip (metal strip nose bridge) The side of the clip is facing up; 4. Use the elastic band on both sides to fit the mask to the face; 5. Two fingers gently press the metal strip on both sides of the nose; 6. Pull the lower end of the mask to the lower jaw to adjust to No gap between the faces is good. ★ This product is a one-off item. It is important to note that this mask should not be in direct contact with chemicals. After use, the mask should be placed in the original packaging and stored in a dry and ventilated place.
How to distinguish between true and false activated carbon? Most of the activated carbon layers used in general mask factories use impregnation processing methods to mix resin and activated carbon to be fixed on non-woven fabrics. There are many fake activated carbon masks on the market, although the surface looks like dark black "activated carbon." "The cloth is actually only dyed and processed, and it is completely incapable of adsorbing odor or organic gas. The real activated carbon is activated carbon particles or activated carbon fibers that have been carbonized and activated at high temperatures. Even if they are exposed to high temperatures, they are not easily melted and disappeared.
Try it out, cut off the activated carbon mask you used, take out the black activated carbon layer, rub it by hand, and if there are black particles falling, use a lighter to burn it, if there is no residual activated carbon particles or active Carbon fiber means that you have previously purchased a counterfeit that has no adsorption effect.