Refractometer Calculators and final SG

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195877

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There are various spreadsheet's and calculators that will help determine gravity during and after fermentation (when using a refractometer).

Many have used the "More Beer" calculator with good comparison's, and I have found another one(with a lot of research and other information) that may be of interest.
The website is http://seanterrill.com/2011/04/07/refractometer-fg-results/
You can download the calculator from there.

The two sites do not provide identical results but similar...
On More Beer-
Original Brix of 23
Apparent Brix of 12
Actual SG 1.019

On Seans calculator- (also provided with Wort correction factor, etc.)
Original Brix of 23
Final Brix of 12
Refractometer FG Correlations
Old Cubit 1.072
New Cubit 1.0204 > ABV 9.2%
New Linear 1.0214

He goes into great detail about his research and findings that is very compelling.

A quote from the site...
Interestingly, the linear correlation is more accurate than the cubic, albeit slightly less precise.

Any thoughts on this would be great!
I will also try to post some comparative results (with a Hydrometer) of my own when I get to final SG's from my first batch.

Cheers, TK
 

pricelessbrewing

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Yup, sean's is the one you want to use.

Not sure how the WCF will work with mead, you'll have to provide your own measurements and compare a hydrometer to your refractometer to calculate it.
 

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