Which site is right? - Home Brew Forums
Home Brew Forums > Home Brewing Beer > Bottling/Kegging > Which site is right?

Reply
 
Thread Tools
Old 07-06-2013, 05:20 PM   #1
CBMbrewer
Recipes 
 
Nov 2011
, The south
Posts: 761
Liked 61 Times on 53 Posts



When I put the following info into four different priming sugar calculators I get different answers:
5 gallon ipa at 70*F with a desired co2 concentration of 2.4

Northern Brewer: 5.64oz dme
Brewers Friend: 7oz dme
KotMF: 7.11oz dme
Homebrewing: 5.04oz dme

Which one should I use? Which one do you use? And why are they different?


__________________
Happiness is in the eye of the beer holder

 
Reply With Quote
Old 07-06-2013, 05:26 PM   #2
jakenbacon
Recipes 
 
Oct 2011
Glendale, AZ
Posts: 618
Liked 101 Times on 79 Posts


Hmmm interesting.... I would at least recommend you use corn sugar over DME when you do indeed bottle....



 
Reply With Quote
Old 07-06-2013, 06:10 PM   #3
CBMbrewer
Recipes 
 
Nov 2011
, The south
Posts: 761
Liked 61 Times on 53 Posts


Quote:
Hmmm interesting.... I would at least recommend you use corn sugar over DME when you do indeed bottle....
Why is that? I have heard of people using both and I have always used dme.
__________________
Happiness is in the eye of the beer holder

 
Reply With Quote
Old 07-06-2013, 09:20 PM   #4
day_trippr
Recipes 
 
May 2011
Stow, MA
Posts: 16,915
Liked 2845 Times on 2132 Posts


While corn and table sugars are virtually 100% fermentable, DME is not, so you have to decide if that's a good thing or not...

Cheers!

 
Reply With Quote
Old 07-06-2013, 09:55 PM   #5
CBMbrewer
Recipes 
 
Nov 2011
, The south
Posts: 761
Liked 61 Times on 53 Posts


Quote:
While corn and table sugars are virtually 100% fermentable, DME is not, so you have to decide if that's a good thing or not...

Cheers!
Right. Forgot about that. It seems dme can take a bit longer to carb as well. Also, corn and cane is cheaper!
Anyone have any insight as to what priming calculator to use? A 2 ounce difference seems like a lot...
__________________
Happiness is in the eye of the beer holder

 
Reply With Quote
Old 07-06-2013, 10:34 PM   #6
JuanMoore
Recipes 
 
Oct 2009
The Old Pueblo
Posts: 21,631
Liked 3656 Times on 3480 Posts


Quote:
Originally Posted by CBMbrewer View Post
Right. Forgot about that. It seems dme can take a bit longer to carb as well. Also, corn and cane is cheaper!
Anyone have any insight as to what priming calculator to use? A 2 ounce difference seems like a lot...
The main reason you're getting different numbers is that the different calculators are using different estimates for the apparent attenuation of the DME. Different brands of DME have different attenuation, and would therefore require different amounts to achieve the same carbonation level. If you notice, the NB calculator has two different values for priming with DME, 5.64 oz, and 7.72 oz for Laaglander brand DME. The tasty brew priming calculator has three different amounts, based on DME's with three different AA's.

The calculators use slightly different equations and figures as well, so even using table sugar, which everyone assumes to have 100% AA, the figures won't agree completely. They won't be off by two ounces either though.
__________________
I'm trying to find some porn filmed by a dog wearing a GoPro. - SharonaZamboni

Hunter, when you get bored, will you put a taco in my elephant's hands for me? - Hat

 
Reply With Quote
Old 07-07-2013, 07:51 PM   #7
CBMbrewer
Recipes 
 
Nov 2011
, The south
Posts: 761
Liked 61 Times on 53 Posts


Quote:
The main reason you're getting different numbers is that the different calculators are using different estimates for the apparent attenuation of the DME. Different brands of DME have different attenuation, and would therefore require different amounts to achieve the same carbonation level. If you notice, the NB calculator has two different values for priming with DME, 5.64 oz, and 7.72 oz for Laaglander brand DME. The tasty brew priming calculator has three different amounts, based on DME's with three different AA's.

The calculators use slightly different equations and figures as well, so even using table sugar, which everyone assumes to have 100% AA, the figures won't agree completely. They won't be off by two ounces either though.
Great. Thank you! They seem to all pretty much agree about cane and corn sugar.
__________________
Happiness is in the eye of the beer holder

 
Reply With Quote
Old 07-07-2013, 08:22 PM   #8
CBMbrewer
Recipes 
 
Nov 2011
, The south
Posts: 761
Liked 61 Times on 53 Posts


I've read that you should use less priming sugar when priming a keg. People say anything from 1/3, 1/2, 2/3 and the full volume. What is the correct, most reliable amount?
__________________
Happiness is in the eye of the beer holder

 
Reply With Quote
Old 07-07-2013, 11:58 PM   #9
Yooper
Ale's What Cures You!
HBT_ADMIN.png
 
Yooper's Avatar
Recipes 
 
Jun 2006
UP of Michigan, Winter Texan
Posts: 69,033
Liked 7615 Times on 5359 Posts


Quote:
Originally Posted by CBMbrewer View Post
I've read that you should use less priming sugar when priming a keg. People say anything from 1/3, 1/2, 2/3 and the full volume. What is the correct, most reliable amount?
In general, use 1/2 of the amount you would for bottling assuming that your keg is filled normally (not 1/2 full). For most people, that would be 2-2.5 ounces of corn sugar per 5 gallons.
__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006

 
Reply With Quote
Old 07-08-2013, 01:06 AM   #10
CBMbrewer
Recipes 
 
Nov 2011
, The south
Posts: 761
Liked 61 Times on 53 Posts


Great! Thanks yoop.


__________________
Happiness is in the eye of the beer holder

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Question about this site . . . (site admins) sonvolt General Beer Discussion 9 04-06-2006 02:41 AM


Forum Jump