AMS Multi-Stage Core Sampler

Collects virtually undisturbed core samples of up to 36" in length in soils, waste pits, or other semi-solid materials for agricultural and environmental studies, soil research, archaeology, limnology research, ocean and coastal studies, geological investigations, etc.

Features & Construction

Made of 300 series stainless steel except for the core tip which is 400 series (harder) stainless steel. Included are a core tip, an auger tip, a 12 inch long 2-3/8 inch OD base section with 2 inch OD stainless steel retaining cylinder, a solid cap threaded to accept a slide hammer, handle, or extensions, two plastic caps for the retaining cylinder, and a slip wrench to aid in disassembly. Machined to strict tolerances so parts fit together precisely and retaining cylinders slide in and out easily. Twelve inch long extensions permit the sampler to be extended to six feet.

Use & Operation

For an undisturbed sample the core tip is used along with a slide hammer to drive the sampler into the ground. As many 12 inch extensions may be used as necessary to obtain a continuous core, and these are screwed on above the base section. The maximum the sampler can be expected to penetrate is six feet of depth, but three feet is more the norm. Retaining cylinders are used in twelve inch sections but can be special ordered up to six feet long. After pounding the sampler into the matrix to be sampled, it is removed, the cap and extensions unscrewed, and the retaining cylinders with sample are removed out the top of each section and then capped. If desired, the sampler can be used without the retaining cylinders, and the sample is merely pushed out of each section.

The auger tip can be used in place of the core tip, and this is turned into the soil or other matrix with the addition of a cross handle. The sample obtained will be representative but will not be stratified like a sample taken with a core tip. This tip can also be used to auger down to the level where a core is needed to be taken.

Additional Information

For sampling matrices which are loosely consolidated, core catchers, or tips with sludge valves, may be used. A core catcher fits into the sampling cylinder between the tip and the retaining cylinder where it is sandwiched in place. It acts as a one way valve to let sample material in but not out, and is reusable as many as 20 times. To sample even less cohesive material, core and auger tips with one way butterfly valves would be desirable instead of a core catcher. These are more appropriate for sampling lagoons, lakes, and waste impoundments where sludge and muck may be present.

Retaining cylinders are available in butyrate plastic, brass, stainless steel, and Teflon in 12 inch lengths. Two feet and three feet lengths are available as a special order in all but Teflon, as are custom lengths up to six feet long. Stainless steel cap inserts are also available to line the plastic caps if desired, producing a non-reactive sample container when used in conjunction with a stainless steel sampling cylinder.

Quick connect adapters and extensions may be used with the sampler if an auger tip is used, but not if a core tip is used, as the connections would not stand up to the stress imparted by the slide hammer. Screw type connections are necessary when using the slide hammer.

Components may be supplied individually to suit a particular application, as some jobs may not require the auger tip, steel retaining cylinder, etc. Additional slip wrenches for easy disassembly are also available in case one is insufficient.

Common Questions:

Specifications:

Ordering Information:

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