title: The accuracy of coin-operated breath analysers installed in licensed premises in the Perth metropolitan area.
abstract: OBJECTIVE
  To examine the accuracy of coin-operated breath analysers installed in licensed premises in the Perth metropolitan area.
  
  
  METHODS
  Two hundred licensed premises were contacted, which resulted in the location of 36 wall-mounted, coin-operated breath analysers. One instrument was removed prior to testing. These premises were then visited and the accuracy of the instruments was tested in situ using National Association of Testing Authorities Australia (NATA) certified 0.080% and 0.100% ethanol in nitrogen gas.
  
  
  RESULTS
  The instruments were installed in the licensed premises as follows: 15 in the lounge bar, 10 in the main entrance, six in the public bar, two in the passageway to the toilets, and one in the male toilets. One licensed premise provided a handheld breath instrument. All instruments were accompanied by warning and operating instructions, but only five had any educational material. Only seven of the licensed premises had staff who had received any training in the operation of the wall-mounted instruments. Half of the licensees were unaware of the servicing requirements of the instruments. The testing found that only nine (25%) of the instruments provided acceptable results.
  
  
  CONCLUSIONS
  The low level of accuracy of coin-operated breath analysers in the Perth metropolitan area is alarming and users should be informed of the potential inaccuracies. This paper, however, does not rule out that some wall-mounted breath analysing instruments may provide accurate results when properly maintained.
authors.affiliation: Western Australian Police Service.
authors.forename: Greg
authors.initials: G
authors.lastname: Hay
authors.forename: L Rina
authors.initials: LR
authors.lastname: Cercarelli
mesh_terms: D001944:Breath Tests / Q000295:instrumentation; D000431:Ethanol / Q000032:analysis* / Q000097:blood; D006801:Humans; D007318:Inservice Training; D008004:Licensure; D008283:Maintenance; D010067:Ownership; D011897:Random Allocation; D014904:Western Australia
chemical_list: D000431:Ethanol