RS60 Open-Tube Sampler Operation.... How it Works...
The 3.25 in. probe rod serves as the sample tube. Unlike all other Geoprobe® applications, the 3.25 in probe rod is driven with the male (pin) end being the leading end of the sampler. A cuttting shoe with a spacer ring is threaded onto the male end of the probe rod, and a liner is inserted through the opposite end of the probe rod. The RS60 drive head is then threaded into the female (box) end of the probe rod and you're ready to go.

A.  RS60 Open Tube Sampler is advanced to collect first sample.
B.  Sampler and soil sample are retrieved.
C.  Next soil sample is collected using an MC Drive Head to adapt to 1.5 in. or 2.125 in. probe rod.
D.  Second soil sample and sampler are retrieved.

* The RS60 closed sampler can be driven discretely (driven through undisturbed soil) as well.

RS60 Closed-Piston Sampler Operation.... How it Works...
When "open-hole" continuous soil sampling is hindered by slough or probe hole cave in, the RS60 sampler can be used with a closed piston option. This option simply utilizes a center probe rod string (1.25 in. rods) which holds an RS60 Piston Point Assembly inside the RS60 Cutting Shoe preventing any soil from entering the sampler until the center rods are removed. The RS60 Closed-Piston Assembly also requires the RS60 Closed-Piston Drive Head, the RS60 Center Rod, and a 1.25 in. Centering Drive Cap. With the use of 3.25 in. outer rods and 1.25 in. inner rods, the RS60 Closed-Piston System is driven like a dual tube system - inner and outer rods are added as the tool string is advanced. Once the sampling depth has been reached, the inner rod string is removed and the 3.25 in. outer casing is advanced to collect the sample material. After the sample fills the liner, the outer casing is retracted to retrieve the soil core. With the patent pending liner profile, the liner can be safely and easily cut for sample access.

A.  RS60 Open Tube Sampler is advanced to collect first sample.
B.  Sampler and soil sample are retrieved.
C.  Next soil sample is collected using an MC Drive Head to adapt to 1.5 in. or 2.125 in. probe rod.
D.  Second soil sample and sampler are retrieved.