I am running low on number of samples, so can i use a single pellet for both density measurement by Archimedes and SEM analysis after drying it? SEM will done on the fractures surface of the pellet.
As long as your density measurement did not impose any structural damage (e.g., cracking or compressing), it should be okay to use the tested sample for SEM. If your previous tests involved merging the pellet in any solvents, make sure you thoroughly cleaned the pellet.