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	FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
		Digest Janitor: pbabcock at hbd.org


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Contents:
  Grain specification Lovibond vs. SRM (Fred L Johnson)


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Date: Mon, 14 Mar 2011 08:38:01 -0400
From: Fred L Johnson <FLJohnson52 at nc.rr.com>
Subject: Grain specification Lovibond vs. SRM

Thanks to AJ for his response to my question on SRM vs Lovibond.

Now I'd like to ask how I should be using the specification on the malt I
purchase which shows me its color in Lovibond. Is this specification actually
indicating to me what the color of my wort will be in SRM and not Lovibond? (I'm
assuming the malt specifications refer to the color of wort and not necessarily
the beer produced from it.) I understand that the ASBC method for measuring SRM
has become the standard for assigning Lovibond ratings to grains, which raises
another question. Are the maltsters converting SRM to Lovibond and reporting the
color as Lovibond, or are they simply reporting SRM and calling it Lovibond? If
they are measuring SRM, why not report the grain color in SRM units?

AJ informed us that tintometers actually output a Lovibond value. Are the
maltsters using tintometers to generate the Lovibond malt specifications they
report?

Finally, the BJCP style guidelines report beer colors in terms of SRM. Should we
be converting our Lovibond predictions to SRM values if we are targeting some
style based on the BJCP style guidelines? And how do the commercially available
brewing software packages handle this issue in recipe formulation. (I prefer
using my own "homebrewed" Excel workbook for all my brewing calculations.)

I think I get more confused, or at least I have more questions, the more I
understand. Or should that be "misunderstand"?

Fred L Johnson
Apex, North Carolina, USA





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