It is highy used for Solids particles & non oil based liquids particles from sprays - tested for mean particle size of 0.6 Microns. Liquids or oil based particles - tested for mean particle size 0.4 micron. Each layer with a function of viz. Pre-filter, fine filter & skin comfort cover media .Easier to breathe through the filter media Colour : Yellow / Grey Weight : Less than 12 gms Meets requirements of EN 149:2001 standards Widely used in Bagging, Cement, Ceramics, Coal Industries, Construction, Distillation & Breweries, Drilling, Dyes & Dyestuffs, Ferrous & Non-ferrous Metallurgical industries, Grinding, Glass Etching, Grinding, Paper processing, Sweeping, Textile, Tyre, Tobacco processing, Woodworking, etc It is highy used for Solids particles & non oil based liquids particles from sprays - tested for mean particle size of 0.6 Microns. Liquids or oil based particles - tested for mean particle size 0.4 micron. Each layer with a function of viz. Pre-filter, fine filter & skin comfort cover media .Easier to breathe through the filter media Colour : Yellow / Grey Weight : Less than 12 gms Meets requirements of EN 149:2001 standards Widely used in Bagging, Cement, Ceramics, Coal Industries, Construction, Distillation & Breweries, Drilling, Dyes & Dyestuffs, Ferrous & Non-ferrous Metallurgical industries, Grinding, Glass Etching, Grinding, Paper processing, Sweeping, Textile, Tyre, Tobacco processing, Woodworking, etc