Powder Testing

Flow Through and Orifices type Measuring the ability and the time taken for a powder to flow through an orifice of known size is a useful method of quantifying powder flow. The cylinder attachment comprises a stainless steel cylinder having a capacity of 200 mL and comes complete with a set of 20 interchangeable stainless steel disks ( each having a precision drilled hole in the centre covering the following sizes: 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34 and 36 mm) each of which can be secured to the bottom of the cylinder by means of a collar provided for this purpose. The cylinder attachment can be used in two ways ( a) to carry out quantitative flowability tests based on mass vs time or ( b) to determine the intrinsic flowability of the powder concerned in the form of a flowability index based on comparative measurements. In certain circumstances where, for example, the purpose of the test is to simulate flow in a hopper or other production situation, it may be preferable to use a funnel in the form of a truncated cone as opposed to a cylinder.