I purchased a 6 gallon Chilean cab/merlot blend juice bucket (del toro) from M&M this spring. This year I seem to have had a large shift in pH and TA after alcoholic fermentation. PH meter was calibrated before each use and has been very reliable for me in the past. Also I am using fresh NaOH for each TA test. Has anyone else experienced this before? Did I unlock some hidden acidity with this one?
Pre Fermentation
Initial: pH=3.76; TA=2.1 g/L
Adjust: pH=3.4; TA=3.1 g/L; addition of 24g tartaric
Post Fermentation (w/ D254)
pH=3.12; TA=7 g/L
Pre Fermentation
Initial: pH=3.76; TA=2.1 g/L
Adjust: pH=3.4; TA=3.1 g/L; addition of 24g tartaric
Post Fermentation (w/ D254)
pH=3.12; TA=7 g/L