Van Veen grab sampler
= Van Veen grab sampler
{wiki=Van_Veen_grab_sampler}
The Van Veen grab sampler is a type of sediment sampling device used primarily in marine and freshwater environments to collect sediment samples from the seabed or riverbed. It is designed to obtain undisturbed samples of the sediment layer, which can then be analyzed for various physical, chemical, and biological parameters.