"Respirable Dust Sampler APS-113BL, APS-113NL & APS-113DXNL Ambient Air Air laden with suspended particulates system through As the air passes through the cyclonecoarse non respirable dust is separated from the air stream acting by centrifugal forces on the solid particles These separated particulates fall through the cyclone’s conical hopper (2) and collect in the sampling bottle fitted at its bottom. The fine dust forming the respirable fraction of the Total Suspended passes through the cyclone and is carried by the air stream to the filter paper (3) clamped between the top cover (4) and filter adapter assembly (5) The Respirable Dust (RSP) is retained by the filter and the carrier air exhausted from the system through the blower"