How to calculate content of ALCOHOL in drinks?

ALCOHOL

Reference: WHO Audit guide

LOW-RISK drinking level (WHO brief intervention)

§  No more than 20 grammes alcohol/day, 5 days a week

(recommending 2 non-drinking days)

How to calculate content of ALCOHOL in drinks?

Conversion to gramme:

Amount of alcohol (ml)   X     %/100   X   0.79 {conversion factor}     = ? gramme ethanol

                                                                                                                                                        

For each ml of ethanol, there are 0.79 grammes of pure ethanol

Example:

§  1 can of beer (330ml) at 5 % (strength) X 0.79 = 13 g ethanol

§  1 glass of  wine (140ml) at 12% X 0.79 = 13.3 g ethanol

§  1 shot of spirits (40ml) at 40% X 0.79 = 12.6 g ethanol

Conversion to unit:

1 unit =  10 ml of pure ethanol = 7.9 grammes

	? unit = ( Amount of alcohol (ml)   X    % ) ÷ 1000

 

Example:

§  1 can of beer (330ml) at 5 % (strength) contains 1.65 units.

→ (330 X 5) ÷1000 = 1.65 units

NHS recommends:

Men – should not regularly drinking more than 3-4 units of alcohol a day.

Women - should not regularly drinking more than 2-3 units of alcohol a day.

NHS guidelines 2016 (UK) suggests a new limit of 14 units per week this applies to both men and women.

-ryna-                                                                                                          

ALCOHOL