The World Health Organization (WHO) characterised the properties of bio persistent fibers. This refers to inorganic fiber dusts (except asbestos fibers) with a length > 5 microns, a diameter < 3 microns and a length-to-diameter ratio of > 3:1.
The World Health Organization (WHO) characterised the properties of bio persistent fibers. This refers to inorganic fiber dusts (except asbestos fibers) with a length > 5 microns, a diameter < 3 microns and a length-to-diameter ratio of > 3:1.
