Comments for SeanTerrill.com

Comment on Refractometer Estimates of Final Gravity by Brew #4 Borane (BH3 - Brownish ale with 3 hops) | Porkhampton Post

Brew #4 Borane (BH3 - Brownish ale with 3 hops) | Porkhampton Post — Fri, 17 May 2013 09:36:14 +0000

[...] BeerSmith or the web based calculator at onebeer) and plenty of information about it, for example here. The refractometer is less breakable, easier to read, only uses 1 drop of wort (so reduces the [...]

Comment on Refractometer Calculator by iBrewmaster2 - Page 5 - Home Brew Forums

iBrewmaster2 - Page 5 - Home Brew Forums — Tue, 14 May 2013 12:46:03 +0000

[...] a "wort correction factor" (typically 1.04) like in Sean Terrill's version? (link: http://seanterrill.com/2012/01/06/refractometer-calculator/) -How does the inclusion of water profiles work? Does it actually help you calculate salt [...]

Comment on Dry Yeast Viability by Dry yeast viable cell counts - Home Brew Forums

Dry yeast viable cell counts - Home Brew Forums — Thu, 09 May 2013 00:47:19 +0000

[...] out the density is closer to 20B/g. See http://seanterrill.com/2011/04/01/dry-yeast-viability/ [...]

Comment on Refractometer Calculator by To Rouse or not to rouse - Home Brew Forums

To Rouse or not to rouse - Home Brew Forums — Tue, 07 May 2013 03:02:51 +0000

[...] have to have adjustment calculations if used for beer (as opposed to wort): http://seanterrill.com/2012/01/06/refractometer-calculator/ +1 on I can't fathom how you could have such active fermentation with minimal gravity drop. How's [...]

Comment on Build a Better Stirplate by Stir plate - Potentiometer and fan questions... - Home Brew Forums

Stir plate - Potentiometer and fan questions... - Home Brew Forums — Fri, 26 Apr 2013 04:06:58 +0000

[...] and other people say 1k ohm (http://seanterrill.com/2010/04/26/build-a-better-stirplate/) Does it make much of a difference? Why does it work with both. How do I calculate the required [...]

Comment on Refractometer FG Results by Using your Refractometer Correctly for Maximum Accuracy in Home Brewing | Brewer's Friend

Wed, 24 Apr 2013 16:01:51 +0000

[...] http://seanterrill.com/2011/04/07/refractometer-fg-results/ [...]

Comment on Yeast Pitching Rate Results by Is a starter necessary? - Page 3 - Home Brew Forums

Is a starter necessary? - Page 3 - Home Brew Forums — Tue, 23 Apr 2013 23:45:22 +0000

[...] interesting case study experiment on underpitching and off-flavors that I came across: http://seanterrill.com/2010/05/09/yeast-pitching-rate-results/ googletag.display('div-gpt-ad-1364420449836-3'); __________________ Drinking: Double Hop EPA, [...]

Comment on Refractometer FG Results by webmaster

webmaster — Wed, 17 Apr 2013 17:20:31 +0000

Sandro,

The reason I prefer the cubic correlation is that while for this particular dataset it was less accurate, it was still more precise (smaller standard deviation), which leads me to believe that it will be more accurate in the long run. For what it’s worth, for the data I’ve taken over the past two years (27 beers), the cubic is both more accurate and more precise.

Sean

Comment on Refractometer FG Results by Sandro

Sandro — Tue, 16 Apr 2013 18:41:42 +0000

Hi Sean,
great tool! I was wondering why you’re using your simplified cubic polynomial in your calculator after all, since your data clearly suggest that the new linear calculates final gravities that are more closely to the actual hydrometer readings? (even though the differences between the two “Terrills” appear to be marginal). Thanks in advance.
Sandro

Comment on Toward a Better Refractometer Correlation by Refractometer readings in BRIX - Page 2 - Home Brew Forums

Refractometer readings in BRIX - Page 2 - Home Brew Forums — Wed, 10 Apr 2013 16:33:13 +0000

[...] I have found his calculator more accurate for FG readings. He has done some excellent work. http://seanterrill.com/2010/07/20/toward-a-better-refractometer-correlation/ http://seanterrill.com/2010/06/11/refractometer-estimates-of-final-gravity/ [...]