Functions of a complex variable with a large parameter and construction of regions

The paper describes an experimental setup for studying the solubility of substances in SCF media and the implementation of a supercritical fluid extraction process using a pure and modified polar solvent additive. The advantages and disadvantages of this installation are analyzed, ways of improving it are indicated, leading to achieving a more accurate GFR flow rate, maintaining the necessary constant pressure in the first extract collector for fractionation of a certain component of the mixture and eliminating multiple regulation of the GFR flow rate.