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AQUATIC SAMPLING
Swing Samplers Subsurface Grab Samplers Water Sampling Bottles BOD Sampler VOC Sampler Bottom Grab Samplers Core Samplers Suction Sampler TEF Sampler Mod. Hesslein Sampler Flowing Water Samplers Aquatic Sampling Equip. Benthic Aquatic Sampling Artificial Substrate Samplers Support Equipment Electrofishing Sampling Kits Borger Color Chart Armored Thermometer Forel-Ule Color Scale Disposable Gloves Accessories Embeddedness Light Density Meters Coolers Aquatic Shaker Sieve Scales Calipers Pebble Count Frame Data Collection Computers Field Books Field Notebooks Soil Sampling Kits Kayaks & Pontoons
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Core Samplers
Core samplers are used when an undisturbed sample
of sediment is required. They are suitable
especially for clay, silt, or sand bottom and are
used more widely in lakes than in streams. Hand
corers designed for manual operation can be used in
shallow water as much as several meters in depth.
Deeper water requires devices such as the Wildco®
K-B type or Ballchek corer which depend on gravity
to drive them into the sediment. The AMS sort
sediment corer and the Ogeechee sand pounder both
work with a drop hammer to drive the sampler into
the river or lake bottom. All corers have been
designed to retain the sample as the instrument is
withdrawn from the sediment and returned to the
surface. The parts for the Wildco® K-B type and
Ballchek corers are interchangeable allowing for
maximum flexibility. Depending on the study
objectives, sections of the core may be retained in
the tube. Intact cores are best preserved by
freezing, but the sample can be sieved, labeled, and
preserved.
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