Patent ID: 7757573

Claim:
A bed water sampling device for simultaneously collecting a plurality of water samples from the lowest water column at different levels above a water bed with a plurality of cylindrical sample containers provided at least one end with a closure device actuated by a time-controlled release and arranged for vertical adjustment in a horizontal orientation on a center support rod terminating at one end in a ground element and connected at its opposite end to a steel cable for positioning on a water bed characterized by the fact that the center support rod ( 2 ) is connected at low friction and for free rotatability between a weighted base frame ( 7 ) as the ground element and the steel cable ( 9 ) at low friction and with a flow vane ( 6 ), that the time-controlled release ( 10 ) is mounted in the weighted base frame ( 7 ) in a compression proof manner and is activated automatically only by the placement continuing for a predetermined time on the water bed and that the sample containers ( 3 ) are provided at their other end ( 15 ) with a closure device ( 16 ) also actuated by the time-controlled release ( 10 ).