Author Topic: Est OG vs Est Pre Boil Gravity  (Read 2560 times)

Offline telemarkus

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Est OG vs Est Pre Boil Gravity
« on: August 14, 2016, 06:35:41 PM »
Hi All;

I am confused by the two calculated measures in Beersmith based on data I am entering.

Est. OG vs Est. Pre Boil Gravity

My Est. OG I always slightly higher than my Est. Pre Boil Gravity. Why? are these not the same thing? Gravity measured after the sparge and before the boil?

Thanks,

markus.

KellerBrauer

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Re: Est OG vs Est Pre Boil Gravity
« Reply #1 on: August 14, 2016, 06:54:38 PM »
Greetings - your OG (original gravity) is measured after the boil. Your pre-boil is as it says, before the boil.  When the wort boils it looses water essentially condensing the extract. I typically measure the OG just before I pitch the yeast.

Hope this helps!!

Offline telemarkus

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Re: Est OG vs Est Pre Boil Gravity
« Reply #2 on: August 14, 2016, 09:13:09 PM »
Yes this was a stupid question. Thanks for the reply!

 

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