Author Topic: Yeast Starter - Viability Percentage Not Working  (Read 4128 times)

Offline dongordon

  • BeerSmith Apprentice Brewer
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  • Posts: 16
Yeast Starter - Viability Percentage Not Working
« on: June 15, 2011, 12:00:21 PM »
In the Yeast Starter tab for a given recipe, the Yeast Viability calculator/estimator does not seem to be working.  For a yeast with a manufacturing date of 5.17.11, it says the viability is 96%.  On the Yeast Starter Tool the viability is calculated at 76.44%.  Mr Malty also calculates the viability as 76% for the same date.

Would you please fix the viability calculation in the Yeast Starter tab for a given recipe?  I want to make sure it calculates the correct size starter needed.  Thanks!

Offline Hopfrog

  • BeerSmith Brewer
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  • Posts: 27
Re: Yeast Starter - Viability Percentage Not Working
« Reply #1 on: June 15, 2011, 12:52:04 PM »
Check your brew date on the recipe design tab, the viability calculator takes this date into account as well.

Offline dongordon

  • BeerSmith Apprentice Brewer
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  • Posts: 16
Re: Yeast Starter - Viability Percentage Not Working
« Reply #2 on: June 15, 2011, 02:10:52 PM »
Hopfrog - you are a genius.  I had the brew date set to 1/1/2011, what I do before I actually brew - I keep a record of recipes and batches, the later gets the really brew date.  Once I set the brew date to today, the Yeast Viability calculation works correctly.

Thanks !!!!!  :)