Made an interesting mistake this last weekend...

I used the sringe and technique from one kit - 15cc wine, start with
10cc NaOH - what you used to tirate to 8.2 is the TA with NaOH from
another kit and got unusually high TAs.

Turns out technique 1 used NaOH with 0.2 normality and the other used
0.1.

Is there a formula for TA that includes a variable for the Normality of
NaOH so I recalc what my starting acids were?

thx,
dan

Use this formula...
%(W/V) = 7.5x(VbxN)/VwxF)
Vb = ml of naoh used =
Vw= ml of wine used =
N= normality of NaOH =
F= normality factor if NaOH is not .1N =
>
"Daniel Tortorici" > wrote in message
...
> Made an interesting mistake this last weekend...
>
> I used the sringe and technique from one kit - 15cc wine, start with
> 10cc NaOH - what you used to tirate to 8.2 is the TA with NaOH from
> another kit and got unusually high TAs.
>
> Turns out technique 1 used NaOH with 0.2 normality and the other used
> 0.1.
>
> Is there a formula for TA that includes a variable for the Normality of
> NaOH so I recalc what my starting acids were?
>
> thx,
> dan

Thanks Greg.

What is F, the normality factor? If I used .2N would this be 2?
dan


In article >,
says...
> Use this formula...
> %(W/V) = 7.5x(VbxN)/VwxF)
> Vb = ml of naoh used =
> Vw= ml of wine used =
> N= normality of NaOH =
> F= normality factor if NaOH is not .1N =
> >

It would be .2

2 would be almost a 10 % solution

BTW the formula is in Margalits handbook for small wineries page 160 .
Great book that covers making wine in small wineries .

Greg
"Daniel Tortorici" > wrote in message
...
> Thanks Greg.
>
> What is F, the normality factor? If I used .2N would this be 2?
> dan
>
>
> In article >,
> says...
> > Use this formula...
> > %(W/V) = 7.5x(VbxN)/VwxF)
> > Vb = ml of naoh used =
> > Vw= ml of wine used =
> > N= normality of NaOH =
> > F= normality factor if NaOH is not .1N =
> > >

It would be .2

2 would be almost a 10 % solution

BTW the formula is in Margalits handbook for small wineries page 160 .
Great book that covers making wine in small wineries .

Greg
"Daniel Tortorici" > wrote in message
...
> Thanks Greg.
>
> What is F, the normality factor? If I used .2N would this be 2?
> dan
>
>
> In article >,
> says...
> > Use this formula...
> > %(W/V) = 7.5x(VbxN)/VwxF)
> > Vb = ml of naoh used =
> > Vw= ml of wine used =
> > N= normality of NaOH =
> > F= normality factor if NaOH is not .1N =
> > >

Thanks Greg.

What is F, the normality factor? If I used .2N would this be 2?
dan


In article >,
says...
> Use this formula...
> %(W/V) = 7.5x(VbxN)/VwxF)
> Vb = ml of naoh used =
> Vw= ml of wine used =
> N= normality of NaOH =
> F= normality factor if NaOH is not .1N =
> >

Daniel Tortorici > wrote:

> Is there a formula for TA that includes a variable for the Normality of
> NaOH so I recalc what my starting acids were?

TA = 75 * N * Vn / Vs

where
TA = titratable acidity (as tartaric acid (g/l))
N = Normality of NaOH (0.2 in your case)
Vn = Volume of NaOH (ml)
Vs = Volume of sample (ml)

Ben

Use this formula...
%(W/V) = 7.5x(VbxN)/VwxF)
Vb = ml of naoh used =
Vw= ml of wine used =
N= normality of NaOH =
F= normality factor if NaOH is not .1N =
>
"Daniel Tortorici" > wrote in message
...
> Made an interesting mistake this last weekend...
>
> I used the sringe and technique from one kit - 15cc wine, start with
> 10cc NaOH - what you used to tirate to 8.2 is the TA with NaOH from
> another kit and got unusually high TAs.
>
> Turns out technique 1 used NaOH with 0.2 normality and the other used
> 0.1.
>
> Is there a formula for TA that includes a variable for the Normality of
> NaOH so I recalc what my starting acids were?
>
> thx,
> dan

Daniel Tortorici > wrote:

> Is there a formula for TA that includes a variable for the Normality of
> NaOH so I recalc what my starting acids were?

TA = 75 * N * Vn / Vs

where
TA = titratable acidity (as tartaric acid (g/l))
N = Normality of NaOH (0.2 in your case)
Vn = Volume of NaOH (ml)
Vs = Volume of sample (ml)

Ben

Use this formula...
%(W/V) = 7.5x(VbxN)/VwxF)
Vb = ml of naoh used =
Vw= ml of wine used =
N= normality of NaOH =
F= normality factor if NaOH is not .1N =
>
"Daniel Tortorici" > wrote in message
...
> Made an interesting mistake this last weekend...
>
> I used the sringe and technique from one kit - 15cc wine, start with
> 10cc NaOH - what you used to tirate to 8.2 is the TA with NaOH from
> another kit and got unusually high TAs.
>
> Turns out technique 1 used NaOH with 0.2 normality and the other used
> 0.1.
>
> Is there a formula for TA that includes a variable for the Normality of
> NaOH so I recalc what my starting acids were?
>
> thx,
> dan