breathalyser

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breathalyser

A device used to detect alcohol on a suspected drunk driver’s breath.

Principle
The air in the alveoli is in intimate contact with the capillary blood, meaning that the blood alcohol concentration can be closely estimated from concentration of alcohol in the breath. The breath to blood ratio is about 1:2300, with the caveat that breath alcohol concentration rises faster and falls earlier than in venous blood.
References in periodicals archive ?
Devinder Sanghera, owner of the Lifestyle Express in Cowbridge Road East, said he was given the breathalyser about three weeks ago but still had not used it.
A member of Spar staff in Cardiff with the hand-held breathalyser as part of South Wales Police Operation Purple Ash
Man-about-town Mitchell Burke, a 22-yearold IT technician from Huddersfield, who visited the Parish and Camel Club on Friday night said: "I have seen the breathalysers being used a few times at the Camel Club and it was mainly on people who were absolutely off their heads.
Joanne Ferry tries the breathalyser at the John Duck Pub on Claypath, Durham City
Stores including Boots, Halfords and even Poundshop began stocking breathalyser kits, which range in price from PS1 to PS59.99.
"The breathalyser almost jumped out my hand when I ran the first test at 6am - a BAC reading of 1.6 per cent, the unit flashing red.
NEW motoring laws have come into force in France making it compulsory for drivers to carry breathalyser kits in their vehicles.
Only 13% said that the new regulations will reduce people driving over the limit, and 70% said that drivers will only carry the breathalysers to comply with the law, and will not change their behaviour.
And road safety campaigners in the UK have warned that the French government-approved breathalysers - which cost from 3 pounds - are actually of little use in gauging whether a driver is over the drink-drive limit.
Police say this encourages drivers to drink up to the limit but that the breathalysers often give false readings.
The research found that cheap breathalysers get contaminated by deposits from breath, increasing the chance of a false reading.
At a meeting of the authority's employment committee,personnel director Bob Williams confirmed he was looking into the possibility of introducing breathalysers.