Help with numbers from Lanza Vineyard grapes!

[texaswinemaker]

Here are the numbers my wife and I came up with.

Cab-PH=3.7 Brix=24 T.A.=.375
Petite- PH=3.6 Brix=24 T.A.=.375

The T.A was measured with a basic kit by Country Wines. The PH was measured with a Hanna Phep and I'll be honest I used a hydrometer to measure the (SG) and converted it to Brix. The brix was consistent with other measurements obtained from other central Texas wine guild members.

The question I have is regarding acid. Isn't the TA low at .375 with the PH within a normal range.

Suggestions for adjustments?

Thank you all!


Petite- PH=3.6 Brix=24 T.A.=.375

The T.A was measured with a basic kit by Country Wines. The PH was measured with a Hanna Phep and I'll be honest I used a hydrometer to measure the (SG) and converted it to Brix. The brix was consistent with other measurements obtained from other central Texas wine guild members.

The question I have is regarding acid. Isn't the TA low at .375 with the PH within a normal range.

Suggestions for adjustments?

Thank you all!

 

[ibglowin]

I have to wonder if your NaOH is off, Buffers are off...... Calculation is off.

Something is off!

 

[texaswinemaker]

I have to wonder if your NaOH is off, Buffers are off...... Calculation is off.

Something is off!

What do you suggest I do?

Thanks for responding!

 

[ibglowin]

Double check you calculations, check batteries ,check buffers, then add acid if all else fails.

 

[joea132]

I crushed Lanza Cabernet and had pH around 3.3 and TA around. 84. I'm going to buy new chemicals my next trip to the store because I thought those were off. I'm inclined to think your numbers are incorrect as well.

 

[JohnT]

Joea,

PH of 3.3 and TA of .08 makes sense.

PH=3.6 Brix=24 T.A.=.375 does not make sense.

It looks like the Brix and PH agree. I would expect a slighly high PH with a brix of 24.

Glowin is correct. I would bet money on your TA test being off. I would check the age of your chemicals, check your math, and re-read the instructions to make sure that you are doing everything correctly.

 

[texaswinemaker]

Thank you guys for all of the suggestions. I believe the ph and the brix are correct and the acid test kit isn't. I really appreciate all of the input.