tag:blogger.com,1999:blog-5445569787371915337.post868313683605450940..comments2024-03-28T13:20:29.156-07:00Comments on Shut up about Barclay Perkins: Scotland monthRon Pattinsonhttp://www.blogger.com/profile/03095189986589865751noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-5445569787371915337.post-35832147588311306232011-09-14T03:31:52.158-07:002011-09-14T03:31:52.158-07:00Bark,
Acidity was expressed "as acetic acid&...Bark,<br /><br />Acidity was expressed "as acetic acid" and, I presume, measured by titration. These days we use pH which is much more convenient. If you want to convert the "as acetic" figue you may use this spreadsheet formula:<br /><br />=LOG(SQRT(B5*A5/100))*-1<br /><br />A5 is the "as acetic" figure expressed as a decimal.<br />B5 is the dissociation constant of acetic acid (0.0000175).<br /><br />For example an "as acetic" figure of 0.12% returns a pH of 3.84.<br /><br />The formula is the one I use in Open Office but I think it will work in Excel.mentaldentalhttps://www.blogger.com/profile/15226160741245530097noreply@blogger.comtag:blogger.com,1999:blog-5445569787371915337.post-17714486976379412662011-09-13T12:57:32.298-07:002011-09-13T12:57:32.298-07:00Giddy like a schoolboy, I have often wondered the ...Giddy like a schoolboy, I have often wondered the history of Scottish brewing from the Pattinson perspective ..game on !Arctic Alchemyhttps://www.blogger.com/profile/17595519000704103690noreply@blogger.comtag:blogger.com,1999:blog-5445569787371915337.post-59742601738426874652011-09-13T09:52:24.283-07:002011-09-13T09:52:24.283-07:00Yes, Scottish beer from the 1940s—I might be inter...Yes, Scottish beer from the 1940s—I might be interested in that...Craighttps://www.blogger.com/profile/14129472719929268755noreply@blogger.comtag:blogger.com,1999:blog-5445569787371915337.post-66627072232498020022011-09-13T07:55:13.263-07:002011-09-13T07:55:13.263-07:00Will be a really great month! Already brewed the f...Will be a really great month! Already brewed the first one for tomorrow!!!Kristen Englandhttps://www.blogger.com/profile/05212694853976179911noreply@blogger.comtag:blogger.com,1999:blog-5445569787371915337.post-57035111433690978622011-09-13T07:26:49.602-07:002011-09-13T07:26:49.602-07:00Looking forward to the recipes! I will endeavour t...Looking forward to the recipes! I will endeavour to brew as many as I can.Alistair Reecehttps://www.blogger.com/profile/15929927359428659775noreply@blogger.comtag:blogger.com,1999:blog-5445569787371915337.post-32254788585594142582011-09-13T06:17:10.996-07:002011-09-13T06:17:10.996-07:00Bark, that's total acidity as a percentage. It...Bark, that's total acidity as a percentage. It would include both lactic acid and acetic acid.<br /><br />Normal levels for British draught beer of the period were 0.04 to 0.06%.Ron Pattinsonhttps://www.blogger.com/profile/03095189986589865751noreply@blogger.comtag:blogger.com,1999:blog-5445569787371915337.post-69733321302738618462011-09-13T05:07:01.753-07:002011-09-13T05:07:01.753-07:00I am really looking forward to learn more about th...I am really looking forward to learn more about those underrated styles. <br /><br />Besides, how should one interpret the "Acidity" column? How was that measured?Magnus Barkhttps://www.blogger.com/profile/14700081547823341666noreply@blogger.com