As practice shows, not only amateur wine makers try to define degree of the begun to ferment drink. Quite often even on the alcohol bought in good shop information from the label isn't true, and therefore the question of fortress remains open.
Basis of strong alcohol - ethyl alcohol is initially transparent liquid with a characteristic spirit smell, very quickly evaporates and burns. It is accepted to call the level of content of alcohol in use degree of alcoholic products, the it is higher than a degree, the drink is stronger.
Ethyl alcohol - an inexpensive basis for mixes and solvent, it is often applied in pharmaceutics, infusions from it differ in firmness.
Tabular measuring system
Determine amount of alcohol as a part of liquid by special tables, first of which were developed by the scientist D.I. Mendeleyev. To define alcohol concentration, the GOST standard according to which the fortress of solution is a percentage in volume of alcohol mix at a normal temperature in 20 wasps is used today.
Now to define the number of content of alcohol in solution, use the metric system where an accounting unit is the alcohol liter on all volume at a normal temperature.
Areometer
To define concentration of alcohol, use the special glass measuring device, the areometer with the internal scale having hundred divisions which is called an alcoholometer. Each of the divisions located on its scale shows alcohol volume percent as a part of mix. The zero mark in it specifies that water absolutely clean, and a mark in 100 that mix represents pure alcohol. Such way demands exact approach, at its carrying out it is necessary to arrange correctly a cylinder to trace the provision of a straight line.
Measurements by the areometer
To measure alcohol fortress by means of an alcoholometer it is necessary to rinse capacity previously. Usually for measurements take a measured cylinder or a glass. The alcoholometer, as well as a container, has to be dry and clean. Further in capacity mix for the further analysis is poured, it needs to be shaken up the special mixer which in the course of manipulations shouldn't leave liquid. The mixer can be bought separately from the alcoholometer though in most cases they represent themselves a set.
In case definition was made correctly and at a necessary temperature, the alcoholometer will yield right result about concentration of ethyl alcohol in solution.
After that place an alcoholometer which column with a measured scale has to plunge into liquid at most on a third in the container with alcohol. Estimate an indicator 5-7 minutes later, it is necessary to look at an ellipse of a meniscus which, being narrowed, forms the line which is projected on an alcoholometer scale.