how to measure wort volume? - Home Brew Forums
Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > how to measure wort volume?
Cool Brewing Giveaway - Supporting Membership Drive & Discount

Reply
 
Thread Tools
Old 05-05-2013, 10:04 PM   #1
mwill07
Recipes 
 
Jan 2010
Charlotte, SC
Posts: 86
Liked 5 Times on 5 Posts



I did my first AG last week, and one thing that came up is this: I had no idea exactly how much wort I actually had in the pot, before, during, and after the boil. This seems like a pretty critical element that you would want to track.

you can't simply assume all of the water that goes into the tun comes out. there is some loss due to grain absorption, and a loss due to the tun drain not being exactly on the bottom. So, I'm assuming you typically sparge until you get you 6.5 gallons (or whatever you want to account for boil off) - how do you know when you are done?

During the boil, how do you track the volume inside the pot?

Is this important anyways, or am I over thinking this?



 
Reply With Quote
Old 05-05-2013, 10:10 PM   #2
Bazaar
Recipes 
 
Feb 2013
El Paso, Texas
Posts: 113
Liked 22 Times on 17 Posts


It's pretty important, but it's pretty simple to measure volume inside the kettle. The measuring part is the easiest--you can mark your paddle or spoon with markings to let you know how many gallons you have. The first time you do this, take an old milk gallon, or your bottling bucket and pour in one gallon at a time, marking as you go.

The trickier part is determining how much water you need to sparge with, because it can vary based on your equipment. Start with a calculator, and eventually you'll get a handle for your equipment.



 
Reply With Quote
Old 05-05-2013, 10:14 PM   #3
acidrain
Recipes 
 
Jul 2012
Seattle, Washington
Posts: 2,051
Liked 180 Times on 155 Posts


Quote:
Originally Posted by Bazaar View Post
The trickier part is determining how much water you need to sparge with, because it can vary based on your equipment. Start with a calculator, and eventually you'll get a handle for your equipment.
Not at all... the sparge amount will be exactly what you are short for your batch size.
__________________
Keg #1: Brown Bomber Bourbon/Oak Vanilla Porter
Keg #2: The Bollocks ESB
Keg #3 Lawnmower APA
Fermenter: Empty
Bottled: Mjolnir Mead, Lazy Daze Hefe.

 
Reply With Quote
Old 05-05-2013, 10:27 PM   #4
mwill07
Recipes 
 
Jan 2010
Charlotte, SC
Posts: 86
Liked 5 Times on 5 Posts


Quote:
Originally Posted by Bazaar View Post
It's pretty important, but it's pretty simple to measure volume inside the kettle. The measuring part is the easiest--you can mark your paddle or spoon with markings to let you know how many gallons you have. The first time you do this, take an old milk gallon, or your bottling bucket and pour in one gallon at a time, marking as you go.

The trickier part is determining how much water you need to sparge with, because it can vary based on your equipment. Start with a calculator, and eventually you'll get a handle for your equipment.
hmm...my spoon is stainless steel, tough to mark. I wonder if I can find a stainless ruler marked off in inches, and use that to keep track of depth in the pot - then it's a simple inches/gallon conversion. Seems to me like that would have a better accuracy than marked delineations on the spoon.

 
Reply With Quote
Old 05-05-2013, 10:32 PM   #5
davekippen
Recipes 
 
Dec 2011
Grand Ledge, MI
Posts: 1,260
Liked 164 Times on 127 Posts


I filed some notches in my paddle as mentioned above. Works like a charm. Whatever the difference in volume is between your first runnings and your pre boil target is how much you have to sparge with. My system is actually that calculation plus 1/2 gallon. Not sure why, but I always need to sparge with an extra half gallon.
__________________
Quote:
Originally Posted by JonM View Post
Zombie yeast wants graaaaaaaiiins!!!!!!
Hit me on Untappd https://untappd.com/user/davekippen

 
Reply With Quote
Old 05-05-2013, 10:40 PM   #6
dryboroughbrewing
HBT_LIFETIMESUPPORTER.png
Recipes 
 
Aug 2011
Philadelphia, PA
Posts: 765
Liked 154 Times on 112 Posts


Prior to getting kettles with sight glasses I used a metal ruler, which worked like a champ.

 
Reply With Quote
Old 05-05-2013, 11:55 PM   #7
ron,ar
Recipes 
 
Feb 2007
Little Rock, arkansas
Posts: 316
Liked 26 Times on 20 Posts


Learn early on what your boil off rate is, it's different for different setups, even the weather affects this. Wind and barometric pressure included. Time and trial run works best. I use a stainless brewpot, I usually try to start a 5 gallon batch with 6.5 to 7 gallon preboil. I took my angle grinder and made a slight indention inside the brew pot to mark my beginning mark and another lower for my ending mark. This is where I want to be for my beginning fermentation amount.
Another way is to slowly fill your brewpot with hot water slowly and measure different points. Not all brew pots are flat on the bottom (my pot is a converted keg and is concaved on the bottom) so simple geometry might not work. This will tell you how many gallons per inch in case you want to brew smaller batches.
But in answer to your question..yes it is pretty important.

 
Reply With Quote
Old 05-06-2013, 12:08 AM   #8
iaefebs
Registered User
Recipes 
 
Aug 2010
West Coast, MI
Posts: 2,655
Liked 245 Times on 177 Posts


╥R x H 231

Billy-Klubb Likes This 
Reply With Quote
Old 05-06-2013, 12:28 AM   #9
Billy-Klubb
HBT Berry Puncher
HBT_SUPPORTER.png
 
Billy-Klubb's Avatar
Recipes 
 
Nov 2012
Windom, MN
Posts: 11,604
Liked 5893 Times on 3466 Posts


I learned many years ago, where you are has a huge impact on boil off (relative to humidity & ambient temp). either way, I marked my old boil spoon. it works great. I'm still trying to get a handle on AG, but boil volume is one less thing I have to worry about. thank you magic spoon!
__________________
There is a difference between pride and arrogance. Which do you hold in your heart?
Quote:
Originally Posted by Helen Williams View Post
"If ceramic squirrels are banned, only druks will have ceramic squirrels!"
Quote:
Originally Posted by Randar View Post
I've plenty of legit material... No need to go making up quotes for your sig.

 
Reply With Quote
Old 05-09-2013, 04:06 AM   #10
trapae
Recipes 
 
Feb 2013
Posts: 115
Liked 14 Times on 6 Posts


I measured out all the volumes on my paddle for my kettle and used a dremmel to carve them into the wood. Bad pic but works.


Click image for larger version

Name:	image-3697530525.jpg
Views:	546
Size:	31.8 KB
ID:	120981  

timcadieux Likes This 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Starter Volume vs. Total Wort Volume Arrheinous General Beer Discussion 5 01-16-2013 05:01 PM
How to measure volume in boil kettle? Ampsonic Beginners Beer Brewing Forum 7 11-08-2012 09:31 PM
Stupid Dog!!!!! can you measure grain by volume? PrestigeWorldwide All Grain & Partial Mash Brewing 19 09-28-2012 04:04 AM
DME bulk - measure lbs by liquid volume? robertbartsch Beginners Beer Brewing Forum 1 07-28-2010 09:09 PM


Forum Jump