And to find the purification level, we use this equation. So the specific activity of that particular sample to the specific activity of the original sample that we began with. And so 35 divided by ten and that gives us 3.5. Now, what that means is that extracted sample that we extracted after salting out is 3.5 times as pure as our original sample. And so what that means is our procedure did in fact work because it purified our sample. And that is precisely what is shown when we go from this band distribution to this band distribution going here to here, we decrease the number of bands and that means we remove those unwanted proteins from our mixture.