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Bulk density, also called apparent density or volumetric density, is a property of powders, granules, and other "divided" solids, especially used in reference to mineral components (soil, gravel),chemical substances, (pharmaceuticals) ingredients, foodstuff, or any other masses of corpuscular or particulate matter.
It is defined as the mass of the many particles of the soil material divided by the total volume they occupy.
The total volume includes particle volume, inter-particle void volume, and internal pore volume.

Just for reference on bulk material handling process, please refer to the following bulk density chart for glass wool, silica, sawdust, diatomite, carbon black, waste plastics, flour, asbestos, activated carbon, soda ash, malt, polyethylene pellet, barley, talc, terephthalic acid, pulverized coal, slaked lime, oil coke, soybean, wheat, glucose powder, calcium carbonate, sugar, carbide, silica sand, coke and cement.

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