This stainless steel Volumeter meets ASTM Standard B329-90 for the measurement of the apparent density of refractory metal powders, fine metal powders, and other free flowing powdered materials. It is identical to model S6498516 except that it is supplied with a 18 mesh funnel. The use of stainless steel for the funnels, base and baffle box, and glass plates for the baffles makes this unit the easiest to clean and maintain. Additional funnels with custom mesh screens are available on request. This unit is also suitable for use with caustic materials.