A.P. Buck Inc. carries cassettes and slides for collection of wide range of both viable and non-viable aero-allergens including mold spores, pollen, insect part, skin cells, fibers, inorganic particulates, toners, environmental dusts and other airborne particles. These cassettes and medias can be used with Buck BioAire B520, BioSlide B1020, Libra Plus LP-7 and Libra Plus LP-20.