► Dust generated from grinding is harmful.

► If the dust to air ratio is too dense it is hazardous and presents a risk of combustion.

► A wide range of filter media is available, including HEPA filters (up to 99.97% effective for particles of 0.3 μm or smaller), ASHRAE filters (up to 95% effective for particle sizes of 0.5 μm or larger ) and ULPA filters (99.9995% effective for particles of 0.12 microns or larger).