title: [Microbial colonization of the walls of a copper pipeline in a central disinfection dosage unit].
abstract: Part of a copper-pipe taken from an 11 years old central disinfection dosage apparatus was investigated by Scanning Electron Microscopy. The pipe was covered by a thin paste-like coating. SEM revealed two distinct layers. In direct contact to the copper a layer of extracellular polymeric substance was seen. In direction to the luminary we found a second layer consisting of bacteria which were not embedded in extracellular polymeric substance. Some of the microorganisms of this layer showed holes. Bacteria in direct contact with disinfection solution showed a rough thickened surface indicating the existence of capsule substances.
mesh_terms: D003300:Copper; D004203:Disinfection / Q000295:instrumentation*; D008855:Microscopy, Electron, Scanning; D011549:Pseudomonas / Q000254:growth & development*; D013242:Sterilization / Q000295:instrumentation*
chemical_list: D003300:Copper
vernacular_title: Untersuchungen zur Wandbesiedlung der Kupferrohrleitung einer zentralen Desinfektionsmitteldosieranlage.