Justrite Centura coalescing carbon filters minimize odor by capturing 99 percent of liquid particulates released in the form of gaseous vapor. The two-stage vent filter is easy to install, snapping conveniently into the factory installed "Quick Disconnect" fitting. A convenient color-changing carbon cartridge (top portion) changes from deep purple to black as hydrocarbons are absorbed to indicate when replacement is necessary. The coalescing filter (bottom portion) can be reused with new carbon filters several times and can be replaced after 3-4 carbon filter cycles. Filters have been designed for use with all round TF, PP and custom built "Quick Disconnect" 2 and 5-gallon cans. Two-stage filter addresses environmental concerns by capturing 99 percent of liquid particulates to minimize odor. Filter comes fully assembled and quickly snaps into fitting on can for easy set-up. Top carbon filter with filter replacement window simply twists on to coalescing filter for easy filter changes.