Working out ABV

[tommy2teas]

Hello,

I made and bottled 23l of TC but would like to know the ABV.

I didnt take an OG but I know the total sugar was 2553 (just apple juice no extra sugar was added)

and I took a FG of 1.002 then primed with 1/2 tsp of sugar per 500ml

can it be worked out?

Any help would be great

:thumb:

 

[Chop_Suey_Stuey]

If you google Fermcalc (Sorry can't post link as I'm new to the forum and it thinks i'm a spammer ) it's a pretty good site, not sure but you might be able to play around with some of values and find what you're after? :grin:

 

[Moley]

2553g sugar in 23 litres = 111g/litre

100g in the litre gives 36 gravity points (1.036)

So 111g in the litre gives 1.11 x 36 = 40 points, or 1.040

Feed that into the forum calculator (which doesn't use the decimal points) and 1040 down to 1002 gives 5% abv.

Your priming sugar will nudge that up to about 5.2%.

 

[ScottM]

Apple juice is approx 1% higher in gravity than the sugar alone would make it. That means that if the fermentability is 11.1% (111g per litre) the yield is around 12.1%.

Based on that the OG would have been around 1.044. With an FG of 1.002 I would estimate the ABV to be around 5.45%. Priming with 1/2tsp (2.5g) gives an additional 100g approx which bumps the ABV up to 5.6%.

That sounds about right for a straight up AJ turbo cider.

The AJ I use has 114g per litre and comes out around 6% when all is said and done.

 

[oldbloke]

My rule-of-thumb - not as accurate as the posts above this - is 20g/l=1% (assumes all sugar fermented away)
2553/23=111g/l
111/20=5.505%
In practice you get slightly less than this r-o-t suggests, and you didn't get right down past 1.000, but with the priming sugar, it won't be far off

I like to stare at this chart and guess which column will be closest to reality:
http://www.brsquared.org/wine/CalcInfo/HydSugAl.htm

 

[tommy2teas]

Excellent thank you all

:clap:

 

[tommy2teas]

Just worked out my Lemon Hooch ABV and its comming out at 9%

Think I need to sip it from now on

:drink: