SKC Product Code: 100-3902 SKC DPS System (Deployable Particulate Sampler System) for portable 10 L/min Ambient PM2.5 Sampling (US Army Version). The DPS System includes a Leland Legacy (programmable) sample pump with Li-Ion battery, 100-240V single-station charger, IMPACT sampling head, filter holder (2), calibration adapter, rain cap, disposable impaction substrates (25), filter holder opener, tubing with quick-connect, and mounting bracket, in a heavy-duty, lockable carry case. The US Army version includes all items in the 100-3903 Kit, plus an electronic laminar flowmeter