Now that I can test my NaOH, I retested the apple wine. pH 4.01 solution was 4.02, pH 7.01 solution was 6.99, newly purchased pH 3.0 solution was 3.0. So all is good there. Tested the apple wine and got a pH 3.98 and TA 5.7 g/L. Guess it's time to toss in a small amount of malic acid (small, really small). The flavor is okay but I don't want to have to pump the SO2 levels up really high if I can help it, so will do little micro adjustments (gram at a time) let sit for a day and taste test (it's a tough job but someone has to do it). I'll probably be down a gallon by the time all this tasting and adjusting gets done. Still clear as a bell, maybe even clearer than before. Nice aroma too, you can tell there are some apples in that there wine.
Never done apple, so I'm not being critical, only inquisitive, why use malic instead of tartaric? Shouldn't there be plenty malic from the apples?