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The ratio of venous blood alcohol content to breath alcohol content may vary significantly, from 1300:1 to 3100:1. Assuming a blood-alcohol concentration of 0.07%, for example, a person could have a partition ratio of 1500:1 and a breath test reading of 0.10 g/2100 mL, over the legal limit in some jurisdictions. [17]
If police suspect that a driver is under the influence of a substance such as alcohol, then the driver will undergo a breath test. [36] If over the legal limit of 0.05g per 100 millilitres of blood, then a second breath test will be taken and used as evidence against the driver when charged with the offence. [36]
To get accurate readings on a breath-testing device the individual must blow for approximately 6 seconds and need to contain roughly 1.1 to 1.5 liters of breath. For a breath-test to result accurately and truly an operator must take steps such as avoiding measuring "mouth alcohol" which is a result from regurgitation, belching, or recent intake ...
The Breath Logix devices were tested under the Australian Standard AS 3547.1 (for electronic breath alcohol testing devices for professional use requirements and test methods) --one of the world’s most comprehensive alcohol testing standard protocols. Devices were tested for over 6-months under rigorous alcohol, drift, climatic ...
Drinking and driving is something that should never be done, but all too many people have "one too many" alcoholic beverages at their local bar or sports venue, then get behind the wheel to drive ...
The Preliminary Breath Test (PBT) or Preliminary Alcohol Screening test (PAS) is sometimes categorised as part of field sobriety testing, although it is not part of the series of performance tests. The PBT (or PAS) uses a portable breath tester.