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-   -   BIAB Water Volume Calculator (http://www.homebrewtalk.com/f244/biab-water-volume-calculator-234277/)

jbrookeiv 03-22-2011 09:48 PM

BIAB Water Volume Calculator
 
Hey guys,

I put together a BIAB Water Volume Calculator to help on my brew days, and figured I'd share it with you. I always seemed to forget to do the calculation before heading to my buddy's to brew, so I finally got it posted on my blog. Enjoy!

http://classist.net/biab-calculator

Please consider donating using the embedded Donate button on the page if you find the tool useful.

jbrookeiv 03-22-2011 09:50 PM

Also, just tested it on my iPhone, and it works like a charm. SCORE!

jbrookeiv 03-24-2011 08:44 PM

Figured I'd bump this in case anyone missed it. I think it's a very useful tool for all of you BIAB brewers out there.

ksparkes 03-25-2011 02:03 AM

Hey man, just saw this will be putting it to use this weekend on my first all grain. I'm going to use a cooler for mashing. Quick question for strike temp, do you just go a couple deg higher than your mash temp since you are using such a high water to grain ratio?

theschick 03-25-2011 02:09 AM

Thanks!

jbrookeiv 03-25-2011 03:23 AM

Quote:

Originally Posted by ksparkes
Hey man, just saw this will be putting it to use this weekend on my first all grain. I'm going to use a cooler for mashing. Quick question for strike temp, do you just go a couple deg higher than your mash temp since you are using such a high water to grain ratio?

Yup, usually 3-4 degrees higher does the trick, but I can direct fire my mash since I mash in my kettle, so it's no big deal if I undershoot it.

kable 03-25-2011 04:56 AM

I started out with a grain lb multiplier of .125 like you have in your calculator but it seemed to leave me with too much water. I have only done a few batches.

How many BIAB batches have you done? Has this constant held up pretty good for you? Is it linear or does it seem to absorb more as you get higher OG, requiring 15lb+?

fishnfever 04-11-2011 03:18 PM

Thanks jbrookeiv!! I have been thinking of doing some small all grain batches and this is just what I was looking for :rockin:

Atvar 04-12-2011 02:40 AM

BIAB absorption varies greatly due to how people handle the bag at the end of the mash. Letting the bag drip out means less absorption, and squeezing the hell out of it even less. I seem to be able to get it down to about 0.05 gal/lb if I squeeze the hell out of the bag when I'm done.

cadarnell 04-13-2011 05:27 PM

Quote:

Originally Posted by Atvar (Post 2829345)
BIAB absorption varies greatly due to how people handle the bag at the end of the mash. Letting the bag drip out means less absorption, and squeezing the hell out of it even less. I seem to be able to get it down to about 0.05 gal/lb if I squeeze the hell out of the bag when I'm done.

any problems with squeezing the hell out of the bag? .. I'd like to do that but I'm still scared to try it I guess ... I gave mine a very small squeez last time but I know I left some sugar in that bag ... thoughts?


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