Airmetrics manufactures the MiniVol™ TAS, which samples ambient air at 5 liters/minute for particulate matter (PM10, PM2.5, TSP). While not a reference method sampler, the MiniVol™ TAS gives results that closely approximate data from Federal Reference Method samplers. Lightweight and portable, the MiniVol™ TAS is ideal for remote areas or locations where no permanent site has been established.