The Dust Bag Filters/Collectors can be used to capture dry or mildly wet particles from tool & cutter grinders, cast iron machining, graphite / carbon machining, surface grinders, drilling, milling, deburring, polishing, mixing, etc. Powertech Pollution Controls Pvt. Ltd. Supplies Dust Bag Filters/Collectors. Powertech Pollution Controls Pvt. Ltd. Offers a range of filtration systems. The Dust Bag Filters/Collectors are fitted with non-woven polyester fabric capable of capturing dust particles as small as 10 microns. The Dust Bag Filters/Collectors comes in 4 models with Input Voltage 415V+10%.