True HEPA, medical grade, H13, and H14 are commonly marketed terms for purifiers that have obtained independent certification for their HEPA compliance, whereas HEPA-type is a more misleading term meant to convey certification without having achieved it (and any model labeled as such should probably be avoided)
State Bar members can receive a $100 discount on admission to the ABA's Techshow 2000, held March 30 - April 1 in Chicago
Talikka M, Kostadinova R, Xiang Y, Mathis C, Sewer A, Majeed S, Kuehn D, Frentzel S, Merg C, Geertz M, Martin F, Ivanov NV, Peitsch MC, Hoeng J (2014) The response of human nasal and bronchial organotypic tissue cultures to repeated whole cigarette smoke exposure
While it isnt anything groundbreaking or new, pick up a tin and have a good time getting to know the season change with it