Dec 162009
I inoculated 2 1.6-L starters with Wyeast 1214 or Empire Brewing Company yeast for an upcoming beer. After the starter completed growth, the cells were counted using a Beckman Vi-Cell XR 2.03 automated cell counter.
The Wyeast 1214 was 282.11e6 cells/ml and the Empire was 132.86e6 cells/ml. Compare that to the Wyeast 1056 I did last time that came in at 85.8e6 cells/ml. There seems to be variation in the density of cells between yeast strains.