fretman124

Recipes 

Is there a formula or some sort of way to convert Lovibond to SRM? I'm looking at beer styles and the color of the beer is given in lovibond. I use beertools to work with recipes and they give color in SRM. How can I tell what 78 degrees L is in SRM?

Thanks

Torchiest

Recipes 

My understanding is that Lovibond and SRM are almost exactly the same. The differences in value are fractions of a point, and not really something to worry about. People still use ºL to describe how dark a grain is, but use SRM to describe the color of the beer. They are pretty much interchangeable.

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Biermann

Recipes 

here you go. . .

°L = (SRM + 0.6) / 1.35


Just do a little algebra to rearrange it, and you'll get SRM.

Cheers

__________________
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On Draft:
Degradation IPA 8.2%
Blackstrap porter 6.1%--under nitro
Freedom's Bitter Alimony Ale



Holding tanks:
Conical #1:Nichts
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Biermann

Recipes 

Oh, and keep in mind that Lovibond is an old way of comparing the color of the extract from a particular grain to that of colored glass, using some sort of colorimeter, which, in and of itself is not greatly accurate. Its mostly an estimation.

__________________
--------------------------------------------------------
On Draft:
Degradation IPA 8.2%
Blackstrap porter 6.1%--under nitro
Freedom's Bitter Alimony Ale



Holding tanks:
Conical #1:Nichts
Bottles: 4 cases--IRV Belgian style golden strong ale
2 cases--IRV Brett conditioned Belgian strong ale
2 cases--IRV Brett and wine oak aged strong ale
On Deck:

Jim Karr

Recipes 

John Palmer devotes a bit of discussion in his book "How to Brew" about the relationship between Lovibond and SRM.

If I remember correctly, at one end of the scale they're identical, but as colors get darker (or is it lighter?) the match goes away.

Check out his book...................

__________________
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Dr Malt

Recipes 

If you use the formula given in this thread, the 78 L calculates to a 104 SRM. Unless you have a spectrophotometer, you are not going to tell any difference once the beer appears dark to the human eye.. It will just be dark. Beers generally are "dark" at a L or SRM of about 17 -20. After that, it is difficult to assess color with the eye. For colors of beer where a difference can be observed, generally L = SRM.

I hope this helps.

Dr Malt

fretman124

Recipes 

Thanks Dr. Malt! that the makes the most sense, to my simple beer soaked mind, anyway