The alco-limiter is an instrument for measuring the breath alcohol concentration and is based upon the electro-chemical oxidation of ethanol. In drinking experiments, during which each subject was given a dose of 0.72 g alcohol per kilogram of bodyweight (for whisky, 20 minutes drinking time), the relationship between blood alcohol concentration and breath alcohol concentration was examined. Capillary blood samples were taken after 30, 60, 90, 120, 180, 240, 300, 360 and 420 minutes from the commencement of drinking and the breath was tested before and after the blood sampling with the alco-limiter. The accuracy of the determination of the breath alcohol analysis for an average alcohol concentration of 0.51 parts per thousand was plus or minus 0.0525 parts per thousand. The value of the blood alcohol concentration was marginally less than that of the breath alcohol concentration, the average difference being -0.043 parts per thousand (p <0.01). A comparison of the blood- and breath-alcohol concentration values shows that the accuracy of the determination is calculated to be 0.0622 parts per thousand, which means that the inference of the breath-alcohol concentration to the blood-alcohol concentration with this instrument (95% confidence limit) is possible to within plus or minus 0.13 parts per thousand. /TRRL/

  • Availability:
  • Corporate Authors:

    International Com on Alcohol Drugs & Traf Safety

    Hammerbrookstrasse 93
    2000 Hamburg 1,   Germany 
  • Authors:
    • Jones, A W
  • Publication Date: 1978-3


  • Undetermined

Media Info

  • Features: Figures; References;
  • Pagination: p. 89-94
  • Serial:
    • Blutalkohol
    • Volume: 15
    • Issue Number: 2
    • Publisher: Bund gegen Alkohol im Strassenverkehr eV
    • ISSN: 0006-5250

Subject/Index Terms

Filing Info

  • Accession Number: 00307702
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Files: ITRD, TRIS
  • Created Date: Jan 15 1987 12:00AM