Watering Down formula

by **flamehawk** » Mon Mar 31, 2014 10:36 am

Lets assume i have 5l at 65% sitting on oak chips. '

When i want to add distilled water to bring it down to 40% what is the formula to work it out :)

Ian

by **Zak Griffin** » Mon Mar 31, 2014 10:51 am

There is a formula, and a calculator, but I just sit my alcometer in the jar and slowly add water until the desired ABV :)

by **C2H6O** » Mon Mar 31, 2014 11:06 am

http://www.aussiedistiller.com.au/xcalcs.html

Forth one down the Dilution Calculator is what you're after.

Cheers

by **flamehawk** » Mon Mar 31, 2014 11:31 am

C2H6O, thanks.

Missed that handy little tool.

Seems that i am also not putting enough sugar into my washes and this might be the cause of low yields.

Interesting.

by **Brendan** » Mon Mar 31, 2014 11:33 am

Do you have a smartphone Ian?

There's an app called 'Distiller's Toolbox'. It's free and does exactly that...

It's not overly that hard to work out if you're half inclined with basic math...

5L @ 65% = 3.25L ethanol / 1.75L water

Since you're not adding any more ethanol, you want to know of what volume will 3.25L of ethanol equal 40%, you get me?

So, 3.25/0.4 = 8.125L

With your 3.25L, you would need 4.875L of water...seeing as you already have 1.75L in there, you would need to add 3.125L of water to bring the abv to 40% :handgestures-thumbupleft:

:-B

by **flamehawk** » Mon Mar 31, 2014 1:25 pm

I like the app idea :D

I usually write all these little formulas down but when i want them their nowhere to be found:)

by **OzKev** » Mon Mar 31, 2014 2:16 pm

Simple way is just
start vol * current % / required %
in your case
5 * 65 / 40
new final vol = 8.125

by **Brendan** » Mon Mar 31, 2014 2:39 pm

OzKev wrote:Simple way is just
start vol * current % / required %
in your case
5 * 65 / 40
new final vol = 8.125

Definitely right...I was just trying to break it down in stages so everyone could understand what was going on :-D

by **flamehawk** » Mon Mar 31, 2014 8:52 pm

How am I going to drink 8.125 Ltrs of rhy whiskey.

I know it's tough but I will take one for the team.

:D

by **Yummyrum** » Mon Mar 31, 2014 10:27 pm

Flamehawk..its Ok , someone has to do it .

But it is sad really.....if our teachers had explained back in year 6 the relevants of this , we may have rembered it ....just maths teachers are shit at giving real world examples of all the great stuff they can offer us .

Thanks Brendan..thats the way I do it too.....just can't believe how hard it was to work out the first time I tried it ...my maths teacher would have been ashamed

by **P3T3rPan** » Tue Apr 01, 2014 4:32 am

+1 for Distillers toolbox. So easy. Just remember it is all in proof not ABV. So simply double your abv to get proof values.

by **tipsy** » Tue Apr 01, 2014 10:32 am

I use the Stillmate app. Works great and is in ABV.

by **Marbled** » Sun May 18, 2014 7:44 am

Moonshine (app) works nicely and is simple enough for me to use.

by **1 2many** » Sun May 18, 2014 6:38 pm

Marbled wrote:Moonshine (app) works nicely and is simple enough for me to use.

:text-+1: :text-imwithstupid: :D

by **res** » Sun May 18, 2014 6:57 pm

Word on the street has it you should add you alcohol to the water rather than the other way around. :-B
Not sure how it changes much but is supposed to prevent hazing. :teasing-blah: