Grab samplers are tools used to collect samples of soil, water, or sediment from a specific location. They are designed to capture a representative portion of the material in a single action, making them useful for environmental monitoring and research. These samplers can vary in design, including handheld devices or larger equipment, depending on the sampling needs. The collected samples can then be analyzed in laboratories to assess quality, contamination, or other characteristics. Grab samplers are commonly used in fields such as environmental science, geology, and hydrology to gather data that informs decision-making and regulatory compliance.