Every time I'm doing centrifugation of my precipitation using ammonium sulfate, I'm always got zero pellet in result. Anyone know why?

I'm doing precipitation with concentration of ammonium sulfate from 0-30%, 0-40% and so on until 0-90%. But, when I'm trying to centrifuge the precipitation result it always producing zero pellet...

03 February 2020 5,917 5 View