Product Name: 3 Ply Disposable Face Mask With Melt-blown Filter Approved by Nelson Labs Brand Name: Unomak Gnl-99 Manufacturer: Unor Exim Private Limited Function: Anti-dust, Anti-bacteria, Antivirus Material: Non Woven Cloth Fabric Structure 1st Ply: 25g/m2 Pp Spun-bond 2nd Ply: 25/m2 Melt Blown (Filter) 3rd Ply: 25g/m2 Pp Spun-bond Type Flat With Ear Loop Color: Blue/white Item Size: 175 X 95mm Weight: 0.15kg/box, 8.6kg/ctn (2000pcs/ctn), 11.2kg/ctn (2500pcs/ctn) Usage: Prevent From Bacteria and Viruses, Droplets. Certifications Indian Standard Bacterial Filtration Is 16289 / Is Efficiency at 3 Micron. Determination of 16288:2014 Is 16289:2014 Breathability Determination of Splash Is 16289:2014 Resistance Is 16289 Sub-micron Particulate Filtration Efficiency at 0.1micron European Standard Bacterial Filtration Bs en Efficiency @ 3 Micron Determination of 14683-2019 Bs en Breathability Determination of Splash 14683:2019 Bs en Resistance 14683:2019 Microbial Cleanliness Bs en 14683:2019 American Standard Bacterial Filtration Astm F 2100:19 / Astm Efficiency @ 3 Micron Determination of Breathability F 2101:2019 Astm F 2100:19 / Bs Determination of Splash en 14683:2019 Astm F Resistance 2100:19 / Astm Flammability F 1862:2017 Astm F 2100:19 / 16 Sub-micron Particulate Cfr 1610 Astm F 2299 Filtration Efficient 0.1 Micron