I harvest yeast but don’t wash/rinse it anymore. I just swirl up the contents of the primary fermentor after racking to the bottling bucket and pour into a sanitized quart mason jar. I had been estimating 2 billion cells per milliliter but may go to 3 billion. This is for my harvested yeast though. I do filter out the hop debris during the pour from the boil kettle to the fermentor.
Link to post on washing and not washing. Collecting, rinsing and reusing yeast - #6 by brew_cat
A picture of your harvested yeast after it has compacted in the refrigerator would help. Cells per milliliter depends upon how much non yeast material is mixed with your harvested yeast.
