Why not just wash the yeast after fermentation. You can get about 40 free batches of yeast and if you really want to an Unlimited amount
Do a yeast washing search. It's easy.
Grinders Island Brewery - Pipeline (Batch #)
Primary #1 Hair of the Arm West Coast Blaster - don't ask(89)
Next up - Award winning Dbl Chocolate Stout Batch #4 (90) On deck - Zythos Pale Ale(91) and then Weizenbock(92)