Originally Posted by MalFet
What kind of side-by-side test? Are you looking at your yeast through a microscope? I have a hard time imagining that something as relatively big as screw blade could mechanically damage yeast cells.
Yes, with a microscope. Using a hemocytometer and cell counts with MB viability staining.
Your question made me go over the numbers a little closer. Looks like I over reacted. When I saw the low viability I panicked, but this was from an old slurry that started with a pretty low viable cell count. in big round numbers, it started as 40 billion total cells at a 50% viability. It ended at 90 billion total cells at 75% viability.
When I look at it as the number of viable cells instead of viability it all adds up.