You will need
  • - sulfuric acid;
  • - litmus paper;
  • - matches;
  • - a glass.
Instruction
1
Pour 30-50 grams of vodka into a glass, add exactly the same amount of sulfuric acid. If the mixture became black, then vodka dangerous to your health, it must immediately be poured.
2
Some forgers are adding sulfuric acid in a weak vodka to enhance the strength of the drink. To determine the quality of vodka you'll need a litmus test. Pour a small amount of vodka, which caused suspicion and put in it a litmus test. If the paper has become red, a vodka drink should not be, because it contains large amounts of acids hazardous to your health.
3
Carefully pour the vodka into a bottle cap and ignite. Good vodka 40 degrees will burn with a blue flame. If vodka is not lit or flashing on the contrary as gasoline - it is worth considering. This vodka is better not to drink.
4
Buying a bottle of vodka, shake it. If the bubbles are large, then vodka is highly diluted with water. If small bubbles rise up the snake, this indicates a good quality vodka.
5
Opening a bottle of vodka, try to inhale it, as they say, full chest. If you feel sharp unpleasant and does not smell of vodka – this vodka should be abandoned. Perhaps the vodka has a touch of acetone or made from industrial alcohol. So better not to risk your health.
6
There is another old method of checking the quality of vodka. Take a bottle of vodka and try to freeze it at -20 degrees. If the bottle has at least small pieces of ice – it is said that she diluted with water. Of course, this vodka is better not to use it.