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Home Brew Forums > Home Brewing Beer > General Beer Discussion > Original Gravity
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Old 09-01-2014, 05:09 PM   #11
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Quote:
Originally Posted by dhelegda View Post
I just got a refractometer for measuring OG. Hydrometer for FG


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Did you calibrate your refractometer? Plain (distilled) water should read 0. Then, you can calibrate your refractomer to your hydrometer for the "wort correction factor". That way, you know your OG is correct. I hope that makes sense! Beersmith has a wort correction factor tool in it, but I know other software does too.

Take a preboil gravity and make sure you know your volume. That will give you your mash/lautering efficiency. Then, post boil, take another reading and note the volume, and that is your brewhouse efficiency.
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Old 09-01-2014, 09:07 PM   #12
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Og is post boil. Starting gravity is pre boil. Fg is post fermentation. All are important.

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