28.3 L/min Preseperator
High capacity, high efficiency pre-collector traps large aerosols with aerodynamic diameters greater than 10 – 15 µm dependent on flow rate. The three piece assembly attaches to the top of the impactor. The unit removes non-inhalable sizes, prevents stage 1 overloading and offers a sharp reproducible cut point.
60 & 90 L/minute Preseperators
To trap large aerosols having greater than a 10 µm aerodynamic diameter, the high-flow, high-capacity pre- collector can be utilized. The two piece assembly attaches atop the impactor to be held in place by the standard spring clamps. Typically the 60 and 90 L/min. designs match to the corresponding 60 and 90 L/min. conversion kits. Benefits include the removal of non-inhalable sizes and the prevention of collection plate overload and possible fractionation and re-entrainment. Westech designed and offers two kits allowing modification of the traditional flow to 60 and 90 L/min.