https://brewwiki.com/api.php?action=feedcontributions&feedformat=atom&user=ScutelatusBrewWiki - User contributions [en]2026-06-13T19:59:02ZUser contributionsMediaWiki 1.41.1https://brewwiki.com/index.php?title=Lovibond&diff=4721Lovibond2009-08-23T18:34:30Z<p>Scutelatus: </p>
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<div>'''Lovibond''' also known as ''degrees lovibond'' or abbreviated as ''L'' is a scale for measuring color originally introduced by ''Joseph Lovibond'' in the 1860's. To determine color the sample is placed in a "Tintometer" which also contains several numbered discs of tinted glass. The Lovibond color is the value assigned to the disc whose color most closely matches the sample. The original Lovibond scale was used to measure gas colors, but has since expanded to measure the colors of oils, chemicals, foods and beverages. For brewing, Lovibond is used primarily to specify grain colors - for example a dark roast malt might be 400 L, while a pale malt might only 2 or 3 L. In this application it is actually the color of a laboratory wort prepared from a sample of the malt under specified conditions whose color is determined. In older books, beer color may also be measured in Lovibond.<br />
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Lovibond color is approximately equivalent to the newer ''[[Standard Reference Method]]'' or ''SRM''. Degrees lovibond and SRM may be used interchangably by homebrewers.<br />
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==See Also==<br />
* [[Standard Reference Method]]<br />
* [[European Brewing Convention]]<br />
* [[Estimating Color]]<br />
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[[Category:Glossary]]</div>Scutelatushttps://brewwiki.com/index.php?title=Standard_Reference_Method&diff=4720Standard Reference Method2009-08-23T18:29:39Z<p>Scutelatus: Some clarifications</p>
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<div>The '''Standard Reference Method''', abbreviated as '''SRM''' is the color system used by brewers to specify finished beer and [[Malt|malt]] color. In the case of malt it is actually the SRM color of a laboratory wort made from the malt which is printed on the package. The SRM value is 12.7 times the log of the attenuation experienced by light of wavelength 430 nanometers (deep blue) in passing through 1 cm of the beer (or wort). The scaling factor (12.7) and path were chosen (1951) to make SRM values correspond closely to values measured in the [[Lovibond]] system which was in use at the time. The two systems are approximately equivalent for home brewing applications. SRM is also sometimes referred to '''Standard Research Method''' by some books but this is incorrect. Below are some approximate SRM color ranges.<br />
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1.0 - 3.0 SRM - Pale yellow color<br />
3.0 - 4.5 SRM - Medium yellow<br />
4.5 - 7.5 SRM - Gold<br />
7.5 - 9.0 SRM - Amber<br />
9.0 - 11.0 SRM - Copper<br />
11.0 - 14.0 SRM - Red/Brown<br />
14.0 - 19.0 SRM - Brown<br />
20.0 SRM - Black<br />
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The [[European Brewing Convention]] has specified a nearly identical system for beer color reporting. The only difference between SRM and EBC is that in the EBC system the log attenuation is multiplied by 25 rather than 12.7. Thus EBC color is approximately twice SRM color. <br />
==See Also==<br />
* [[Lovibond]]<br />
* [[European Brewing Convention]]<br />
* [[Estimating Color]]<br />
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==External References==<br />
* [http://ourworld.compuserve.com/homepages/wrucksterpage/color.htm A Beer Color Chart]<br />
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[[Category:Glossary]]</div>Scutelatus