- --- In new_distillers@yahoogroups.com, "mavnkaf" <mavnkaf@...> wrote:
>

only

> --- In new_distillers@yahoogroups.com, "Sherman" <pintoshine@>

> wrote:

> >

> > ok now I got it. 4500g/23L = 196g/l

> > according to the chart found here

> > http://www.brsquared.org/wine/CalcInfo/HydSugAl.htm

> > this is 1.075, 18.1 brix between 9.5 and 10.5 alcohol potential.

> > Your sg was 1.085 which is 11 to 12% by the chart. Maybe you

> had

the

> > 20 liters of wash which gives 225g/l.

> >

> > Another way to figure it is theoretic yield of sugar is 51% by

> weight

> > according to the stoichiometry.

> > 4.5kg * .51 = 2.295kg etoh is 779g/l

> > so this is 2.95L etoh in 23 liters which is 2.95/23 = 12.8%

> theoretic

> > max. One can usually figure 90% efficiency which give 11.5%. All

> > numbers add up.

the

>

>

> I have finally worked out what I was doing wrong, I was reading

> hydrometer wrong. Since I don't get many washs under SG 1.00, I

Yup. I knew you'd get there eventually. :)

> did'nt know how to express the number to apply it to the formula.

>

> So, og 1.o85 - fg 0.990 = 0.095 * 131 = 12.445 %, right? Thanks

>

> Cheers

> Marc

>

Here's another little tip. FG never goes below 0.985, I don't care

how good the ferment was. That is DRY (ie, no residual sugars).

Slainte!

regards Harry > >

Hi Harry, thanks for your reply, I did'nt know about 0.985 is as low

> > I have finally worked out what I was doing wrong, I was reading

> the

> > hydrometer wrong. Since I don't get many washs under SG 1.00, I

> > did'nt know how to express the number to apply it to the formula.

> >

> > So, og 1.o85 - fg 0.990 = 0.095 * 131 = 12.445 %, right? Thanks

> >

> > Cheers

> > Marc

> >

>

>

> Yup. I knew you'd get there eventually. :)

> Here's another little tip. FG never goes below 0.985, I don't care

> how good the ferment was. That is DRY (ie, no residual sugars).

>

> Slainte!

> regards Harry

>

it would go. I think my reading of 0.990 is still in error still

because I measured it before I let the solids drop. Last night I put

200 ml in the fridge and only a few minutes ago I remembered why I

did it, to test it with out sediment. It did'nt change much, 0.991 @

20 C, so I got about 12.314%. I'm happy with that. I have found

using a heated bath setup is bring some consistency to my fermenting,

keeping consistent temps have got to better.

Cheers

Marc- I'm coming in late on the discussion. Missed two whole

days... That like a life time in this group. Ther

aree a heap of replies but here's a short cut for

calculation alcohol %

Take out decimals.

Start 1085 - 900 = 185 / 7.36 = 25.1% alcohol

Divide the difference of start & Final by 7.36! Voila!

Link

--- mavnkaf <mavnkaf@...> wrote:

> Hi group, I keep doing the maths on this and it

____________________________________________________________________________________

> does not work out

> right??! I have 2 fermenters(23L) in a tub bath @

> 28 C, so the temps

> have been very good through the last 7 days. Now it

> has finished and

> come up will these numbers.

>

> OG = 1.085

>

> FG = 0.900

>

> SO what will the % be? Have some figurs but it

> does not add up, in my

> mind.

>

> Harry's program tell's me it's around 24% but it

> can't right. It's the

> DWWG recipe with 4.5 kg of sugar and one table spoon

> of citric acid and

> the wheatgrem, 500 gr.

>

> Ned Kelly's Air Force

> Marc

>

>

>

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