Author Topic: Pre boil volume discrepancy  (Read 2553 times)

Offline spademan

  • BeerSmith Apprentice Brewer
  • **
  • Posts: 13
Pre boil volume discrepancy
« on: September 24, 2011, 07:55:18 AM »
In my recipe I am using an equipment profile that uses a pre boil volume of 31.58 L. The displayed fields in the recipe, however, shows the pre-boil volume to be sparge (20.88) + mash water (12.9) =total 33.78L.

Could you suggest or explain why there is a discrepancy of 2.2L.

Thanks.

Offline Myk

  • BeerSmith Grandmaster Brewer
  • *****
  • Posts: 155
Re: Pre boil volume discrepancy
« Reply #1 on: September 27, 2011, 01:25:09 PM »
I haven't done the math but I would assume grain absorption. You don't get all the water you put into the grain back out.

If you find that to be too far off there is a place to change the amount of absorption in the options/advanced tab.

 

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