I'd like to use ZERO sorbate if it's economical. From my understanding a 1 micron filter absolute rated filter will remove yeast. So it got me thinking that a 0.5 micron filter would be the way to go to not having to use sorbate. And even if sorbate was being used, since there would be little to no yeast after filtration, maybe I could go with 1/5 the amount of sorbate.. say 1/2tsp for a 5 gallon batch that had been pushed through a 0.5 micron nominal filter. Thanks!