The first objective of the test is to confirm that the wearer knows how to correctly fit the mask by adjusting the straps as well as to validate its performance on the user. The second objective is to verify that the wearer uses a product type or size that fits them correctly.
Protects against dust that can cause lung disease.In particular, protects against coal, silica, cotton, iron ore, graphite, kaolin, zinc, aluminium dusts.Protects against harmful dusts such as asbestos, bauxite, coal, silica, iron, and against toxic dusts such as manganese, lead and chromium.