Gravity points for priming

read 654 times • 5 replies •

Thread Frozen
beers 8 º 10:17 Fri 11/2/2012

How do you determine how many gravity points you need to add to your beer to prime to a certain carbonation level?

Ex. I had 3.5 gallons of beer, shooting for 2.4 volumes of CO2. I think I added 3 oz of cane sugar. Ended up going from 1.010 FG to 1.015 when going into the bottle.

beers 3438 º places 209 º 11:42 Fri 11/2/2012

do you have any software? Iíd recommend getting beersmith... Also, sounds like you bottled way to soon on the other beer.

places 1 º 11:53 Fri 11/2/2012

Here is an online calc: http://www.tastybrew.com/calculators/priming.html

I think itís something like .02 gravity points gives you 2 vols of CO2, which with the residual CO2 in solution (temp depending) should be around average (2.5 vol) carbonation.

beers 2439 º places 18 º 12:00 Fri 11/2/2012

my understanding is that each point of gravity is 0.5 VOC, and if you have still beer you can assume there is already 1 VOC

so if you want 2.5 VOC total you need to bump the gravity by 3 points

so a 5 point bump would put you around 3.5 VOC (1 at atmospheric pressure +2.5)

beers 2439 º places 18 º 12:01 Fri 11/2/2012

most bottles (12 or 22oz) are rated at 3 VOC but can handle about 3.8 (or more) as a safety that isnít advertised.

beers 2160 º places 63 º 22:00 Fri 11/2/2012

Originally posted by DA
Here is an online calc: http://www.tastybrew.com/calculators


Iíve never cared about the effect on gravity, only the ratio of the weight of the sugar or DME to gallons of beer. I guess you could do it as a gravity calculation, but that feels like overthinking the problem.

And those numbers are ounces by weight, not volume.

Homebrew Shops - A collection of homebrew shops and supply houses submitted by RateBeer readers

Homebrewing Articles - RateBeer Magazine's homebrewing department

Homebrew Recipes - Experiment, share and post your own homebrew recipes

Until we can make beer come out of your monitor...

Send Beer Over The Net

Free signup now. Even out a trade, keep good vibes alive, say hi with a beer