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03-22-2012, 03:17 PM   #1
Dumpsterboy
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 pre boil brix question

is there a formula to figure out the OG from my preboil brix. My preboil brix is 15 and i have 7 gallons of wort which i will boil down to 5.5 gallons. Thanks

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03-22-2012, 03:29 PM   #2
Nanobru
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Search for brewing programs like promash or beersmith, these tools are very useful. 7 gallons at 15 brix, boiled down to 5.5 gallons, will yield about 19 brix

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03-22-2012, 03:53 PM   #3
Dumpsterboy
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thanks so much

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03-22-2012, 07:41 PM   #4
airving
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Should be 15 * 7 / 5.5 = ~19. Or something like 1.050 : 50 * 7 / 5.5 = ~63 , or 1.063.

You have some amount of dissolved solids. You're removing liquid but keeping the solids. Brix and gravity readings are measuring density. Pre-boil density * pre-boil volume = total solids = post-boil volume * post-boil density.

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Last edited by airving; 03-22-2012 at 07:43 PM. Reason: For clarity

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