Respirator Mask Material: Non-woven and Active Carbon Certificate: CE highly efficient low resistance 4 Ply Respirator MaskStandard:CE149:2001Test medium: NaCl&DOP Test flow: 95L/Min LevelPenetrationFilter efficiency ResistantFFP120%≥80%21mm H2OFFP26%≥94%24mm H2OFFP31%≥99%30mm H2OStandard:NIOSHTest medium: NaCl Test flow: 95L/Min LevelPenetrationFilter efficiency ResistantN955%≥95% 35mm H2ON991% ...