Abstract
A Large Inorganic Sampler Assembly (LISA) system has been built for the evaluation of particulate sampling devices, including the device used in the NIQSH method for respirable silica (Method 7500). Significant features of LISA are the following: 1) The accommodation of up to 30 filter cassettes or 12 cyclone samplers; 2) high precision of particulate deposition (sr=2.2%); 3) micro-computerized reduction of optical particle counter data; and 4) special design features to facilitate ease of operation. The system has been used to evaluate sampler systems for a number of different airborne dusts.