The purification level is 125 divided by ten and that gives us 12.5. And so we see that this extracted sample following this salting out procedure and on exchange chromatography, this extracted sample of proteins is 12.5 times more pure than our original sample. And that is a good thing. That means our procedure is working. Now, for it to work properly, this yield value shouldn't decrease by too much. So let's see what that yield value is.