Anti-dust respirator

Anti-dust respirator

Respirators are means of protecting the respiratory system from harmful aerosols. As a rule, respirators do not cover the nose and mouth, but are worn at face level, covering the upper part of the face. There are also respirators with additional nose protection, and they completely cover the mouth and nose. These include, for example, filtering half masks with an exhalation valve. They have one more characteristic feature - unlike masks, respiratory goggles and shields, they should not come into contact with the mucous membranes of the mouth and eyes along their contour. If you work with saws, machines or tools with sharp tips, then the respirator must have high strength fastening belts. To protect the entire head from dust, reusable filtering respirators are sometimes used - usually helmets. For example, the respiratory protective helmet RBSh-206 consists of a frame structure to which a spectacle shield, a half mask and an adjustable belt are attached to the desired size. Respiratory helmets protect against exposure to mercury vapor, phenol, benzene, organic acid vapor, phosphorus, copper, etc. There is respiratory clothing. A working respirator is made in the form of a hood; it should not get into your eyes, so it is very convenient to use when working from above or near places where there is a threat of explosion. Respiratory equipment is equipped with replaceable filters of various types.

It is a filter element made of several layers of non-woven material with an adhesive layer that allows air to pass through. It protects the human respiratory tract from harmful particles. The principle of operation is as follows: through the hole, air passes inside, is purified by special bacteria and is supplied back to the user outside. Depending on the degree of contamination, a carbon filter can be installed on the product, which complements the function of neutralizing harmful substances. Half-mask respirators are considered the most reliable and stable; they represent a separate dome located above the bridge of the nose or above the forehead at a short distance. There are different types of respiratory devices, some of which can be used in high performance mode: without or with a valve, oil vapor traps, strong biological (chlorine, hydrogen sulfide, etc.) and aerosol filters. You will see “FFP” marked on many modern filter respirators. The designation is deciphered as follows: FFP2 - does not allow 94% of hazardous substances to pass through; FFP3 - filters 99% of harmful substances; NRR - protects against industrial gases and vehicle exhaust gases; P1B - retains impurities from oil refineries; RSO - capable of capturing aerosol from metallurgical production, such as sulfur dioxide and dioxides.