How does a PVC filter with a 5-micron pore size capture submicron size dust?
The low-ash 5-micron PVC filter is the preferred sampling medium for respirable dust containing crystalline silica and is used in the American Industrial Hygiene Association (AIHA) Performance Analytical Testing (PAT) Program. The 5-micron pore size filters reduce problems associated with sample loading and back pressure. This condition is important to maintaining a constant sampling rate in dusty work environments.
