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U.S. Patent No. 5,186,263
The
most frequently used direct push soil sampler. . . the Macro-CoreŽ Soil
Sampling system. This 1.5-inch diameter, piston-operated sampler features
a positive release system that eliminates the uncertainty of continuous
sampling! When the stop-pin is released, the user retracts the extension
rod string which carries the released stop-pin and the piston-rod right
into the operator's hand.
Other benefits of this new system are numerous.
With a lightweight piston tip assembly, sample compression is minimized
during retrieval. An O-ring on the tip ensures that the sampler remains
sealed until the desired sampling depth is reached. Other features include
increased durability, user friendly, easy to decon, and easy to maintain.
The Macro-CoreŽ system is also versatile.
While sampling loose, difficult-to-sample soils, use the MC stop-pin coupler.
The piston rod and stop-pin are removed in this process which enhances
sample recovery. The stop-pin coupler usually is not necessary when sampling
in stronger, more consolidated formations, where sample recovery is not
a problem.
- Positive release system eliminates the
uncertainty of continuous sampling.
- Sample compression is limited due to the
lightweight piston tip.
- Stop-pin coupler is available for sampling
loose soils.
- 1.5-in. diameter.
- Available for 4-, 3-, and 2-foot Macro-Core®
sample tube lengths.
- Few parts to decon. Few parts to maintain.
- One sampler - two sampling options: Closed-Piston
or Open-Tube.

MC Sampler Tube lengths:
60 in. MC Sample Tube (4899)
48 in. Sample Tube (AT8522)
36 in. Sample Tube (AT8320)
24 in. Sample Tube (AT8220)
1m Sample Tube (AT8420)
Macro-CoreŽ is a Registered Trademark
of Kejr, Inc.
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The MC sampler remains
closed until the desired sampling depth is reached.
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The
MC Quick Link Connectors save time, make tool retrieval more efficient,
and act as a buffer to prevent possible damage to the Stop-Pin Coupler.
When the MC Quick Link is used, the bottom extension rod can be
removed from the ID tool string as it is taken out of the ID of
the probe rod, eliminating any chance of the couple supporting the
potentially unsupported weight of the extension rod. If the quick
link is not used, the coupler may "stretch out.
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