The Spiralus zone sampler is primarily used in the agricultural industry to sample grain and pellets from silos, warehouses or directly from means of transport such as trucks and railway wagons. It is also valuable in the food industry and materials management where coarse grained products need to be checked for quality and homogeneity. The Spiralus zone sampler is primarily used in the agricultural industry to sample grain and pellets from silos, warehouses or directly from means of transport such as trucks and railway wagons. It is also valuable in the food industry and materials management where coarse grained products need to be checked for quality and homogeneity.