FIELD: process engineering.
SUBSTANCE: invention relates to two- and three-ply material composed of a tape containing working play of perchlorovinyl 0.3-0.5mcm-dia fibres and substrate from gummed perchlorovinyl 5-7 mcm diameter fibres.
EFFECT: low resistance to airflow at high efficiency of filtration, application as analytical tales in continuous-operation instruments for aerosol sampling, including radioactive aerosols.
2 cl, 1 ex
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