A container consists of two external cylinders: bottom and top, between which a middle cylinder, designed for a sample, is situated. A method of collecting, preparing and analyzing undisturbed soil samples to define soil hydraulic conductivity generally bases on measurement of volume of water flowing through the sample as a function of time and temperature at a defined hydraulic drop. An equipment consists of a base (6) with a perforated socket (7) to which a pressure column (10) is fitted disconnectedly. A lower edge of the column (10) turns into a flange (11) with holes for screws (12) corresponding to openings made in the base (6). In the base (6) there are horizontal deaeration ducts (8) connected to a vacuum pump. The ducts (8) reach the first grooves of the socket (7). The whole is situated in the external cylinder (17).