oUse non-porous material
oHeavy duty aluminum foil
o~8 x 8 inches (20x20cm)
oPlace powder sample in the center of sheet
oFold sheet in ½ and press a seam
oFold right side in by 1 inch (25mm)
orepeat 3 times
oFold left side in by 1 inch (25mm)
orepeat 3 times
oFold top side (opposite original seam) by 1 inch (25mm)
orepeat 3 times