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priming sugar math...

Posted: Thu Feb 09, 2012 9:15 pm
by JeffPorter
Just a quick check of my math, for those of you numerically inclined.

I think there's about 4 gal of IPA in my carboy - if 3/4 of a cup of corn sugar primes a 5 gals, would 2/3 of a cup be sufficient for (approx) 4?

Thanks...

Posted: Thu Feb 09, 2012 9:46 pm
by KwaiLo
Sure, 0.6 is exact, but 0.66 would work.

Posted: Thu Feb 09, 2012 11:30 pm
by Derek
Keep your eye open for a deal on a kitchen scale... here's the one I use:
http://www.leevalley.com/en/garden/page ... 34&p=45691

Posted: Fri Feb 10, 2012 1:41 am
by KwaiLo
I just picked this one up at Shoppers, clearance end for $20.00.

http://www.amazon.com/Salter-1406-Glass ... B001DQOE98

I have been using a cheapo from Crappy Tire, but it died a few days ago.

Posted: Fri Feb 10, 2012 6:06 am
by JeffPorter
I need a scale anyway for bread baking...(and hops measuring...)

My grand-father in law got me a cheapo one that didn't work...

KwaiLo, you picked up a SALTER for 20 bucks at SHOPPERS? Man, I wonder if any close to me have any.

Posted: Fri Feb 10, 2012 9:12 am
by phirleh
http://www.canadiantire.ca/AST/browse/8 ... ?locale=en
$9.99 2/3's off right now. works for up to about 7lbs. I use mine for grain and even light amounts of hops.

Posted: Fri Feb 10, 2012 9:56 am
by duncan
brewheads has a handy priming calculator.

http://www.brewheads.com/priming.php

Posted: Fri Feb 10, 2012 11:18 am
by Derek
phirleh wrote:http://www.canadiantire.ca/AST/browse/8 ... ?locale=en
$9.99 2/3's off right now. works for up to about 7lbs. I use mine for grain and even light amounts of hops.
That's a great deal. I like the old-school mechanical scale, but I do need something for smaller hop measures. What's the precision on that one? (I was thinking more along the lines of <1 Kg capacity with 1-2 g precision).

Posted: Fri Feb 10, 2012 11:35 am
by phirleh
Derek wrote:
phirleh wrote:http://www.canadiantire.ca/AST/browse/8 ... ?locale=en
$9.99 2/3's off right now. works for up to about 7lbs. I use mine for grain and even light amounts of hops.
That's a great deal. I like the old-school mechanical scale, but I do need something for smaller hop measures. What's the precision on that one? (I was thinking more along the lines of <1 Kg capacity with 1-2 g precision).
I've measured sub 1 ounce amounts of hops. I've never checked the calibration on mine but you can also switch ounces/grams/pounds too. They say it is accurate down to a gram.

Posted: Fri Feb 10, 2012 11:50 am
by icemachine
I got one of these for hops and priming sugar


Posted: Fri Feb 10, 2012 12:00 pm
by jcc
Derek wrote:That's a great deal. I like the old-school mechanical scale, but I do need something for smaller hop measures. What's the precision on that one? (I was thinking more along the lines of <1 Kg capacity with 1-2 g precision).
Derek, I've heard this one at Lee Valley is pretty good. Not that you can just pop into Lee Valley anymore now that you are in Kelowna.

http://www.leevalley.com/en/garden/page ... at=2,40725

Posted: Fri Feb 10, 2012 1:06 pm
by J343MY
Definitely get a scale first if you can. 3/4 cups is a very rough guideline, and it really depends how coarse/fine the sugar is. I have seen 3/4 cups measure out to more like 6 oz. The one time I used the measuring cup method it resulted in bulging caps and overcarbed beer.

I have the Starfrit one mentioned above and I really like it, but it doesn't measure down to a couple of grams. I tried measuring dried yeast on it, and up to about 5 grams it still read 0.

Posted: Fri Feb 10, 2012 1:18 pm
by phirleh
J343MY wrote:I tried measuring dried yeast on it, and up to about 5 grams it still read 0.
Yeah, when measuring grain it seems to jump in increments of .05 ounces, which is about 1.5 grams