SKC Product Code: 225-393 SKC DPS System (Deployable Particulate Sampler System), without pump, for portable 10 L/min Ambient PM2.5 Sampling (for those who already own a Leland Legacy Pump). The DPS System without pump includes IMPACT sampling head, filter holder (2), calibration adapter, rain cap, disposable impaction substrates (25), filter holder opener, and mounting bracket, in a heavy-duty, lockable carry case