Cartridge filters may look alike, but be careful to compare media type, surface area and the fine print of the purity verification program. Only QuickFilter delivers the full premium package, at no extra charge. QuickFilter® cartridges are the original ground water sampling filter for field use, developed to meet the stringent purity requirements of sensitive ground water quality monitoring programs. When sample filtration is required, disposable QuickFilter cartridges are easier to use, faster, and provide more consistent results than other filtration methods. When used directly in-line with a proper sampling pump, QuickFilters cartridges provide additional benefits of eliminating sample alteration due to air contact and/or sample quality changes with time and temperature. Only QED QuickFilter® cartridges deliver the full-rated filtration area that you pay for. If you look inside the capsule, you will find that QuickFilters cartridges contain a full 609 cm2 polyethersulphone media. Many of our competitors claim the same media surface area, but some contain only half that. The QuickFilter media provides maximum flow capacity and superior filtration even in highly turbid waters.