The PowderProof® electric sampler is ideal for the food, pharmaceutical, chemical and agricultural industries where contamination-free sampling of bulk materials in large quantities is essential. From incoming quality control to research and development, PowderProof® provides a reliable solution for sampling free-flowing powders and granules up to 4mm in diameter. The PowderProof® electric sampler is ideal for the food, pharmaceutical, chemical and agricultural industries where contamination-free sampling of bulk materials in large quantities is essential. From incoming quality control to research and development, PowderProof® provides a reliable solution for sampling free-flowing powders and granules up to 4mm in diameter.