Comprised of all stainless steel, it weighs just 5 lbs and has 6" x 7 1/2" jaw opening.Ī bottom sampling dredge consists of two halves of a relatively small box. Raising the dredge closes the scissor jaws to collect the sample. It features a hinged scissor jaw design with a trigger mechanism that olds the sampler open until it contacts the surface to be sampled. The Sand / Silt Dredge is made entirely from 300 series stainless steel. Conductivity Plμs Level & Temperature Meter.Gas Detection Pumps & Colorimetric Tubes.Calibration Accessories & Surface Samplers.IAQ Bioaerosol & Microbiological Samplers.Careful release will distribute the sample approximately as it appeared on the bottom, making sediment profile description possible.įor questions on availability, Contact us or see our FAQ section. After closure, the dredge is pulled up to retrieve the sample. One of the jaws is fitted with an under lip to displace stones or gravel during closure. The impact of the dredge on the bottom surface triggers the spring-loaded release mechanism to close the sampler. A two-way mechanism prevents accidental closure while the dredge is dropping. The top of the sampling chambers are screened to allow water to flow through during deployment which will reduce displacement and shock wave effects that may cause sample loss. Sampler arms are made of powder-coated carbon steel. Sampler body and jaws are made of 300 series stainless steel. Nominal bucket dimensions are 9in wide X 4.5in height X 6in deep (circular shaped). bottom dredge will sink faster and push deeper into sediments. Bottom Dredges are primarily used to sample sand and silt but can be used to sample most types of non-cohesive material, except hard-packed clay.
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