Piston Sampler Set

Takes an undisturbed sample from a maximum depth of 16.5' (5m) below the water table.

For sampling of less cohesive soil layers below the water table. Ideal for sediment sampling from ditches, rivers or channel bottoms.

The piston sampler body is constructed from a thin walled stainless steel tube (6), which has an open ended bottom. At the top of the sampler a lid (4) is welded, through which the piston rod (3) can be moved. When the piston rod is hoisted by the rope connected to the eye (2), a vacuum is created in the tube below the piston (7). The overpressure created in the upper part of the tube is balanced with the surroundings through the outflow openings (5) in the lid. In order to use the sampler at any desired depth, the tube is equipped with a bayonet connection (1), to which the extension rods and handle can be quickly connected. To permit free passage to the piston rod, this connection part is welded on the outside of the tube.

Sample diameter is 1-1/2" (4cm). Tube diameter is 1.6" x 1.5" (40 x 38mm). Auger holes must be at least 2.5" (65mm) for the piston to fit. The Piston Sampler can only be used below groundwater or in sludge type material. The combination Edelman Auger (290018) must be used to dig a hole to the groundwater.