If small, granular-shaped dust is your problem, then cartridge collectors are the ideal solution. The pleated filter cartridges are best suited to capture smaller dust (less than 50 microns), such as grinding/sandblasting, welding fumes, pharmaceutical and fine chemical powders, and laser and plasma cutter applications.
Most of the cartridge collector systems we work with are high-quality built and feature tool-less operation for changing out cartridge media.