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When samples are needed of the top of the seafloor a Van Veen grab is an excellent option. This is a stainless steel, gravity activated soil grab. The stainless steel Van Veen grabs are used for the taking of disturbed samples from the bottom of seas, lakes, rivers, etc. Various designs can be supplied. The smaller designs are manually controlled. The mode of operation of all Van Veen grabs is the same. At the surface the jaws are pushed open and kept in that position by a hook. To keep the hook in the right position the Van Veen grab should be sunk at a steady, not too high, pace. Both jaws are fitted with holes to allow air to escape during sinking. As soon as the jaws touch the bottom, the hook loosens its grip, so that, when hoisting the rope again the jaws will shut tight because of the leverage by the rods. The standard range of Van Veen grabs includes 0.5, 2, 6 and 12 litres but other dimensions are available on request.


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