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
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 messenger triggers the spring-loaded jaws to close. 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
Ordering Information:
445.11 Ekman Dredge
445.12 Ekman Messenger
445.13 Ekman Dredge Cable Kit
53864 Eckman Optional 5′ Handle