The half-mask is used for protection of respiratory organs at concentrations not exceeding the maximum permissible norms more than 15 times and the volume of oxygen content not less than 17%. It is forbidden to use the half-mask for protection against highly toxic substances (hydrogen cyanide and arsenic hydride).
Use in hazardous enterprises, such as: mines; mines; metallurgical production; plants of chemical industry; processing workshops with a high level of dust; nuclear power plants.Also in the agricultural sector, where toxic chemicals and fertilisers are used. In addition, are used by workers who perform paint and varnish works, loading and unloading of goods, etc.
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