AMS Bottom Dredges

AMS 15lb Bottom Dredge easily sample most types of bottom surfaces

A bottom sampling dredge consists of two halves of a relatively small box. The dredge is placed onto the bottom sediment, then closed and pulled up to retrieve a sample. A two-way mechanism prevents accidental closure while the dredge is dropping. The impact of the dredge on the bottom surface triggers the spring-loaded release mechanism without using a messenger. After mechanism closure, the dredge is pulled up to retrieve the sample.

Careful release of the sample distributes the sample approximately as it appeared on the bottom, making sediment profile description possible. The sample is not suitable for most geotechnical analysis and does not provide samples suitable for high-quality chemical analysis for volatile contaminants

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SKU: AMS 445.10 Categories: , , ,

AMS bottom dredges are primarily designed for sampling sand and silt, but can be made to sample most types of non-cohesive material, except hard-packed clay. They provide samples from which the sediment profile can be described.

Features include:
• Inexpensive
• Portable
• Easy to use
• Can be used from a boat or dock

15lb Bottom Dredge
The top of the AMS 15 lb. sampling chamber is screened to allow water flow during deployment and reduce the frontal shock wave that may displace sediment and allow sample loss on contact with the surface to be sampled. A two-way spring-loaded mechanism activates the dredge on contact with the bottom, no -messenger is needed. Sampling area is 36 square inches with a 6″ x 6″ jaw opening.

25lb Bottom Dredge
Heavier for quicker sink.
The upper screens of the 25 lb. bottom dredge allow water flow during deployment and avoid displacement and shock wave effects that may cause sample loss. One of the jaws is fitted with an under lip to displace stones or gravel during closure. A two-way spring loaded mechanism activates on contact with the bottom, no messenger is required. The 6″ x 6″ jaw opening provides a 36 square inch sampling area.

Ordering Information:
445.10 15 lb SST Dredge
445.60 25 lb SST Dredge

Weight 5 kg

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