NOAA Aerosol Sampling Inlet
10 m agl inlet stack, 20 cm diameter, 50 cm/s flow velocity
2.4 m stainless steel tube, 5 cm diameter, 130 cm/s velocity, heated to RH ? 40%
Split into 5 lines, 1.9 cm dia, 30 lpm each
10 mm impactor, then switched 1 mm impactor