Author Topic: Stir plate effect on yeast starter numbers  (Read 2353 times)

Offline Blackfriar

  • BeerSmith Apprentice Brewer
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  • Posts: 14
Stir plate effect on yeast starter numbers
« on: November 24, 2011, 02:31:32 PM »
The new Beersmith2 has a nice feature that can calculate the starter size required using a stir plate.  I have been using Mr Malty’s calculator for some time now and there seems to be a very big difference in the stir plate effect between Beersmith and Mr Malty on this.  For instances: both programs suggest we need around 13.5 billion cells to ferment a 125L batch of 1.060 of ale.  But Mr Malty suggests 5 packs of liquid yeast and a 7.7L starter when using a stir plate, and Beersmith suggests 2 packs and a 6.55L litre stater when using a stir plate.  Can anyone throw any light on this?
« Last Edit: November 24, 2011, 05:20:18 PM by Blackfriar »