Antidust and gas-proof half-mask Lepestok - A
Light anti-dust and gas-proof half-mask "Lepestok - A" is intended for individual protection of respiratory organs from operating vapours of organic matters and simultaneously from aerosols contained in air.
Light anti-dust and gas-proof half- masks "Lepestok - A" are applied at multiplicity of excess of allowable concentrations of harmful matters in air, no more:
• On vapours of organic matters – 1.5;
• On aerosols of any dispersity - 40.
For specialists
Antidust and gas-proof half-mask Lepestok - A
CHARACTERISTICS
1. Mass of a half-mask unpacked - no more than 20.
2. Initial resistance of a half-mask to a constant airflow at a volumetric airflow of 30 l/min - no more than 55 Pа.
3. Time of defensive operating of a sorption-filtering member of a half-mask from vapours of organic matter on constant gas-air stream at source concentration in 1.5 MAC and penetration coefficient no more than 1 % - not less than 6 hours.
4. Coefficient of a penetration of tests - aerosols at an average diameter of particles 0.28-0.34 µm - no more than 2 %.
In the case of the use of the half-mask "Lepestok - A" it is necessary to be guided by the “Description and maintenance instruction".
Warranty period of stowage half-masks "Lepestok - A" is a period of 2 years from time of fabrication in the case of the observance by the consumer of external environments, transportation and storage.