The HVS3 will collect a large, representative sample of dust from indoor surfaces such as rugs and bare floors, and dust from outdoor surfaces such as streets, sidewalks, lawn, and bare, packed dirt. A sample can be collected in 10 minutes that is large enough (10 to 200 g) for multiple chemical analyses and bioassays. It has been used to assess risks from lead, pesticides and other contaminants in house dust.
The HVS3 maintains uniform sampling conditions by measuring and controlling the air flow and the pressure drop across a 5-inch nozzle. A 3-inch cyclone collects more than 99% of the average house dust. The cyclone catch cup can be used to transport the sample. A backup filter can be used behind the cyclone if desired.
Envirometrics, Inc., 4803 Fremont Avenue, N, Seattle, WA 98103. Tel: 206-633-4456; Fax: 206-633-4835.