If you do not work in Rospotrebnadzor, then it can be very difficult to determine the quality of alcohol by eye. And poisoning with alcohol-containing products in our country always comes first. In any case, before drinking a suspicious drink, test it in the following ways.
Let's take vodka first. The first method is to pour 25 g of sulfuric acid into 25 g of vodka. If the liquid has turned black, it is absolutely impossible to drink such vodka. In any case, the resulting must be poured. For the second method, you need a litmus test. If it turns red when immersed in vodka, it is also better not to drink such alcohol - it contains too much harmful acids.
There is another expertise for wine. Place a small container with wine with the neck down in a glass of water, while the opening of the container should be pinched with your finger. When the neck is completely in the water, the finger can be carefully removed. If the wine is mixed with water, it means that the wine is "burned", not natural. The faster the wine settles to the bottom of the glass, the worse it is.
The quality of beer is tested differently. Add acetic acid to a glass of beer (until a precipitate forms). The resulting liquid should not be bitter. Otherwise, there are a lot of foreign impurities in this drink.
Picric acid is sometimes found in beer. She's also very dangerous. Determining its presence is also easy. Put the pot with beer on the fire and wait until it starts to boil. After that, dip a white woolen cloth in a saucepan for 10 minutes. If the beer is good, the cloth should remain white, turn yellow - do not drink this beer.
Take care of your health and remember the warnings of the Ministry of Health.
