TFM M P1 (without an exhalation valve) and TFM M P1V (with an exhalation valve) half masks meets the class FFP1 requirements. Intended to protection against coarse-dispersed solid aerosols (mineral, organic and synthetic dust) at concentrations up to 4 MPC.
Aerosol filter half masks are used for individual respiratory protection against harmful aerosols indoors, underground workings and outdoors, provided that the volume part of oxygen in the working area is at least 17%.
The filtering half masks have a flat-folding shape with a vertical seam. The models are one-size-fits-all and one-type-fits-all (fit for any face type). Due to the unique design of the form and fastening of the headset, the filtering half mask sits firmly on the face and provides a tight fit throughout the obturation area.
They are used over a single shift only (with «NR» in marking), in compliance with usage conditions, relative humidity of air not more than 80% and dust concentration in the air of the working area up to 100 mg/m3 (when used in other dust concentrations the usage time varies).
The filtering half masks can be further equipped with an exhalation valve (with «V» in marking) or not. The exhalation valve prevents the rise of temperature and accumulation of moisture in the under-mask space.
The filtering half masks meet the requirements of the «Technical regulations of personal protective equipment» and DSTU EN 149:2017. The product is supported by the conclusion from sanitary and epidemiological examination of the Ministry of Health Care of Ukraine.