Wet type dust collection is required for the safe collection of combustible metal dust. Wet Type Dust Collection has also been used effectively in many other difficult applications in place of cartridge collectors. ProVents unique scrub design has been an industry standard for over 40 years and continues to lead the industry in Wet Type Dust Collection efficiency.ProVents line of Uni-Wash Wet Type Downdraft Bench Dust Collectors meets or exceeds NFPA #484 for combustible metals including: Aluminum Dust CollectorTitanium Dust CollectorMagnesium Dust CollectorZirconium Dust CollectorTantalum Dust CollectorNiobium Dust Collector