What determines the height of compacted sample powder bed of the fisher sub sieve sizer?201-33

What determines the height of compacted sample powder bed of the fisher sub sieve sizer?201-33

Determine the height of the sample powder bed before testing with an HMK-22 Fisher sub sieve sizer. This height is determined by the sample’s porosity.

L = length or height of compacted sample in cm. (measured by operator)

Fisher Sub Sieve Sizer https://www.labulk.com/hmk-22-fisher-sub-sieve-sizer/