We've all seen the standard keg carbonation chart. But what if you want to force your C02 outside of the usual ranges...Well this here gent has extrapolated the data, translation: done the math and made it easy for us, so that anyone can force at temperatures and psi degrees that aren't ordinary.
Take for example my mild. It should be force-carbonated to 1-1.5 volumes. If your keg fridge is set below serving temp (50-55F) then the standard carbonation charts won't do you any good. Using the shaking method with high levels of carbonation could easily over-carbonate this super-low carbonated style.
Basically, Mr. Hermit made an Excel spreadsheet and did all the extra cell calculations so that all you have to do is enter your fridge temp and psi and voila, it tells you the CO2 volumes you'll end up with.
Incidentally, Senor Hermit was featured on The Brewing Network's Sunday Session Show (Gadget Episode) for his hop/trub strainer.
Check 'em both out.
Word.
Hermit Page:
http://sdcollins.home.mindspring.com/Hermit's HTML carbonation page (use the excel spreadsheet link) :
http://sdcollins.home.mindspring.com/ForceCarbonation.html