-
-
clear sample from the top of a 100 lb primary on Wednesday
Brix 22
pH 3.63
Vinometrica 0.133 NaOH
TA 5.1
YAN 156
Dave’s 0.2 NaOH (results are about 10% lower)
TA 4.65
YAN 140 -
Brix 22.4
-
I have changed my original post because I realized I had been using a sample of 11 ml instead of 10 ml. Here are my revised numbers. I did 2 tests, one on juice drawn off after the crush, and the other after 4 days cold soak. Both samples were settled in the fridge for 2 or more days in order to achieve clear juice on the top layer. Note that if there are organic particulates in your sample it will buffer the sodium hydroxide and you will end up with an erroneously high TA.
Crush Sample:
Brix: 22.6
pH: 3.86
TA 5.2
YAN: 229After 4 days cold soak:
Brix: 22.4
pH: 3.9
TA: 5.2
YAN: 229Regarding the YAN, I would trust Ian’s and Don’s YAN over this one as I applied a correction of 10/11 instead of doing the test over (getting low on reagents).
You must be logged in to reply to this topic.