Particle Loss in Transport Tubing

Multiplexing air samples from various sample points into a single particle counter, such as a Lasair® III, offers the ability to monitor small particle sizes at a reasonable cost. A multiplexed system, also called a manifold system, can be used to monitor 0.1 μm particles with a 1 CFM sample rate for about the same cost per point as using continuous monitors at 0.3 μm with 0.1 CFM sample rate. The combination of higher sensitivity and higher sample volume provides much better data while the system is sampling from a particular location.

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