title: [Production and characteristics of bacteria-labeled talc dust for experimental air hygiene studies].
abstract: Freeze-drying of suspensions of Micrococcus luteus together with talc yields bacteria-labelled dust. This material can be used in experimental air hygiene. Loss of viability due to drying in air during experiments can be expected to be negligible. A wide range of particle diameters (1 to greater than 23 micron) is available. Scanning electron microscopy shows the bacteria sticking on talc particles after freeze-drying (Fig. 3a + b). Viable counts of the material decreased very slowly on storage.
mesh_terms: D000391:Air Microbiology; D000397:Air Pollution / Q000032:analysis*; D004391:Dust; D005612:Freeze Drying; D008837:Micrococcus / Q000302:isolation & purification; D008855:Microscopy, Electron, Scanning; D010316:Particle Size; D013627:Talc
chemical_list: D004391:Dust; D013627:Talc
vernacular_title: Herstellung und Eigenschaften bakteriell markierten Talkumstaubes für lufthygienische Versuche.