Abstract: A water sampling device includes a mounting frame including two end plates disposed parallel to one another on a shaft. A multiple magazine is configured as a rotatable drum magazine that is horizontally disposed between the two end plates of the mounting frame. The multiple magazine includes a plurality of sample containers. Each of the sample containers has a first face and a second face. The first face includes a first axially arranged conical opening and a first positive locking cone forming an inlet valve. The second face includes a. second axially arranged conical opening and a second positive locking cone forming an outlet valve. Each of the positive locking ,cones is configured to shift axially relative to the respective conical opening so as to operate the respective inlet or outlet valve and so as to form a symmetrical annular gap in an open position of the respective valve.

Abstract: A water sampling device includes a mounting frame including two end plates disposed parallel to one another on a shaft. A multiple magazine is configured as a rotatable drum magazine that is horizontally disposed between the two end plates of the mounting frame. The multiple magazine includes a plurality of sample containers. Each of the sample containers has a first face and a second face. The first face includes a first axially arranged conical opening and a first positive locking cone forming an inlet valve. The second face includes a. second axially arranged conical opening and a second positive locking cone forming an outlet valve. Each of the positive locking ,cones is configured to shift axially relative to the respective conical opening so as to operate the respective inlet or outlet valve and so as to form a symmetrical annular gap in an open position of the respective valve.

Abstract: The simultaneous taking of water samples from the bottom of a column of water in the bed water above a water bed is of use for scientific investigation of the transition zone between the water bed and the water column lying above the same, for the determination of parameter gradients. Conventional bed water sampling devices with an arrangement of horizontally oriented sample containers at different water levels do not generally permit a non-invasive sampling. According to the invention, said ground water sampling device thus comprises central retainer rod (2) for the sample containers (3), which permanently rotate freely and easily in the bottom currents by means of a flow vane (6). All sample containers (3) comprise sealing devices (16) on both front surfaces (14, 15) and are flushed through with bed water originating from the corresponding level before the sampling.