Met One Instruments SASS and S/SASS Speciation Samplers are the preferred method of sampling mass and trace metals, organic and elemental carbon, sulfate, nitrate and other ions and elements using PM2.5 Sharp Cut Cyclone inlets in the USA. The SASS and Super SASS are the predominant samplers in the USA-EPA STN network. Manufactured to meet or exceed United States Environmental Protection Agency requirements, this intrument is portable and easily set-up with no tools. Please contact for more information. Read more