Acker - Stationary Piston Sampler

This sampler features a stationary piston, that is, the piston remains stationary as the outer tube of the sampler is pushed ahead into fine silts or clays. The piston creates suction on the sample assisting it into the sample tube. In operation, the piston closes the entrance of the tube eliminating any change of contamination in the tube prior to pressing. The sampler features a vacuum release and a cone clamp assembly that prevents the piston from pushing out the sample upon recovery. The outer tube, containing the sample, is generally used to carry the sample to the laboratory. Several replacement tubes and caps are desirable to take continuous samples without delay. The actuating rods are in convenient tengths for transportation and are necessary to hold piston during the pressing of the sample. For operation in brackish water, brass or stainless steel tubes are commonly used.