لخّصلي

Procedures: Grain length measured with calipers.1 2.Nitrogen cylinder connected to porosimeter; nitrogen passed through coil to reach it. 3.Device had three valves, each serving a purpose; first valve maintained constant coil pressure (P1).9.Last valve opened to release nitrogen from porosimeter; nitrogen cylinder closed to prevent accidents.7.Two spacers inserted into cell; pressure read (coil pressure + cell pressure + spacer volume).

Procedures:
Grain length measured with calipers.1
2.Nitrogen cylinder connected to porosimeter; nitrogen passed through coil to reach it.
3.Device had three valves, each serving a purpose; first valve maintained constant coil pressure (P1).
4.Two spacers (spacer 1,3) placed in cell with grain to ensure full coverage, grain added first, then spacers.
5.Second valve connected to cell; pressure reading taken for empty cell (P2 = cell pressure + coil pressure).
6.Volumes of spacers 1 and 3 added together to get total spacer volume.
7.Two spacers inserted into cell; pressure read (coil pressure + cell pressure + spacer volume).
8.Grain added into cell first, then two spacers; pressure read (coil pressure + cell pressure + spacer volume + spacer volume).
9.Last valve opened to release nitrogen from porosimeter; nitrogen cylinder closed to prevent accidents.