For your soil sampling and investigations in very loose formation, Technidrill offers its Double Core barrel of T6S type range. Each of them is equipped with an inner tube formed with a two faced aluminum shell. It allows visual inspection without disturbing the sample before putting it in the core box.

You can find this type of conventional core barrel in diameters 101, 116 and 131 mm. The head can be ordered alone.
We recommend the range for soil investigation in very fractured soils in which it is difficult to insert the core barrel into the inner tube. The reaming shell is not included. The bits are with face discharge to better cool down the bits, which has a larger cutting surface than the T6 core barrel.