Petrova Sposob

Petrov's method is a method developed by the American bacteriologist Sergei Petrov in 1913. This method is used to determine the concentration of various substances in a solution by measuring the optical density of the solution.

One of the main advantages of the Petrov method is its simplicity and ease of use. To carry out the analysis, you just need to add the solution to the cuvette and measure the optical density. The measurement results can be presented in the form of a graph or table.

In addition, Petrov’s method allows measurements to be carried out in a wide range of concentrations, which makes it a universal method for various fields of science and technology. For example, this method can be used to analyze biological samples, determine the oxygen content of water, and also to control the quality of food products.

However, like any other method, Petrov's method has its limitations. For example, it is not always accurate when measuring low concentrations of substances, and may also give inaccurate results if there are impurities in the solution.

In general, Petrov's method is a simple and convenient method for determining the concentration of substances in a solution, which can be used in various fields of science and technology.

Petrova, a method for microbiological research of pathogenic microorganisms, bacteria and viruses. Opened at the beginning of the 20th century. E.I. Konevoy, improved and modified in the 30s. Soviet microbiologists N.A. Kramova and K.V. Buchinskaya. For the method, various solid nutrient media were used with the addition of a glucose phosphate buffer solution and indicator crystals. Thanks to this, the crystals were colored, which provided imprints from the colonies that represented the morphology and shape of the microorganisms.

From 1960 to 1980 the method was updated in the laboratory of L. A. Lukomskaya, whose employees described new methodological variants of the Petrov method. The new modification of the method has a number of advantages over the old ones and is used in modern scientific practice. The developed recommendations were also adopted as the basis for the program for organizing the work of bacteriological laboratories in the USSR.