Its depend on type of application u would have chosen......Example, amniocytes harvesting for Chromosomal aberrations.....like what would be the application........
Discard the supernatant and re-suspend the pellet in 1ml PBS and put in a micro-centrifuge tube- Need to make sure have the right centrifuge tube the one that its lid gets tight
Spin down at 8000 (rpm) for 7 min (temperature?)
Remove supernatant( make dry the pellet as much as we can)
Put the cell pellet as dry as we can at -20°C until we are ready for cell lysis
So, the only question is about the temperature during spinning.