Efficiency of Dust Sampling Inlets in Calm Air.
Am Ind Hyg Assoc 1975 Aug; 36(8):576-583
Tests were conducted to determine the conditions of particle size, inlet radius, and flow rate necessary for accurate dust sampling. Results showed that published criteria for inlet conditions for correct sampling are overly restrictive and that respirable-size particles are sampled correctly in the normal range of operation of most dust sampling instruments.
Am. Ind. Hyg. Assoc., V. 36, No. 8, August 1975, PP. 576-583