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On December 5th 2014 the Scottish Drink driving limit will be lowered to 50mg alcohol per 100ml of blood instead of 80mg alcohol per 100ml of blood. But what does this mean for you?

The drink driving limit in Scotland is now 0.05%BAC. People can have different readings to one another even if they have drunk the same amount of alcohol. This is due to a variety of factors including size, age and sex. Furthermore people process alcohol at different rates; therefore the time in which alcohol leaves your body also varies.

There are different ways to measure the amount of alcohol in your system. The most accurate way to test how much alcohol is in your system, affecting your impairment to drive at that given time, is with a Fuel Cell breathalyser.  This is what the police use.

Breathalysers read the amount of alcohol in a known amount of breath. To work out how these readings equate to the blood alcohol limit have a look at the table below.

Reading New Limit Old Limit
Mg alcohol/100ml blood 50mg 80mg
Mg alcohol/Litre of breath 0.22mg 0.35mg
µg alcohol/100ml breath 22µg 35µg
%BAC (Blood alcohol content) 0.05% 0.08%

The main concern with the new limit is ‘Am I under the limit to drive legally the morning after?’

If your job or lifestyle depends on you having a driving licence the surest way to avoid losing this is to check yourself.  Our advice: buy for accuracy, and remember to test yourself before driving.



The AlcoDigital Platinum is our favourite personal breathalyser at the moment. It uses fuel cell technology in a replaceable cartridge (eliminating the need for calibration) and is only £169.95.


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If you want the most accurate personal breathalyser on the market then you want the AlcoDigital 3000.  Also a fuel cell, its’ accuracy is second to none and can be set to the reading you like.   At £339.95 it is a little more expensive but that really depends on what value you put on your licence.


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