Approved FFP1 classification. This mask incorporates a layer of activated carbon that effectively removes strong or unhealthy odours. CN P1 C protects against coarse dry and liquid-borne health-hazardous particles from agriculture, chicken farms, refineries, veterinaries, horticulture, various types of sanitation and clearance work, etc. Masks are packed in individual hygienic plastic bags with 20 masks in a box and 200 masks in each transport case. Nominal Protection Factor 4 and Assigned Protection Factor 4.