Which statement about tube samplers is true?

• A. Tube samplers are driven into the soil to collect soil samples.
• B. Tube samplers are used to collect water samples.
• C. Tube samplers are not hollow tubes.
• D. Tube samplers are always made of glass.

Answer: (A)

Tube samplers are hollow cylindrical devices used to obtain soil cores by being driven into the ground, allowing a column of soil to be retrieved for analysis. This method preserves the soil’s structure, stratification, and moisture content, which is important for evaluating soil properties and conditions at specific depths. The statement that this tool is used to collect soil samples by driving it into the soil reflects how it functions in practice, often as a thin-walled or thick-walled tube that captures an undisturbed core.

They aren’t used for gathering water samples; water sampling relies on different tools such as bailers, bottles, or pumps designed for liquid collection. The idea that tube samplers aren’t hollow is incorrect, since their purpose is to house a soil core inside. They aren’t universally made of glass either; most are steel, stainless steel, aluminum, or plastic, chosen for durability and resistance to soil abrasion and corrosion.