The SASS and SuperSASS Speciation Samplers from Met One Instruments Powered by Acoem are designed to comply with and exceed EPA Speciation requirements. Two models provide a choice for compliance monitoring: SASS, a 5 channel sampling system; and SuperSASS, an 8 channel, multiple event sampling system. The SASS conforms to original EPA requirements and SuperSASS adds benefits suggested by state and local authorities. Both models use concepts pioneered by Met One Instruments, such as the contamination free Canister, solar radiation shield, and modular design. SASS and SuperSASS not only comply to EPA specifications, they exceed the specifications; as proven in EPA and California Air Resources Board (CARB) field studies.