I am new to wine making and struggle with my acid test. I have 3 wines going, cab sauv, merlot, and niagara. I gave up on the color test and bought a decent pH meter for acid testing. I don't know whether my sodium hydroxide is bad, or if i am doing something wrong. I cannot get the pH to 8.2 I added almost 20ml to my niagara and the highest it went was 4.1. Added 10ml in my reds and didn't go above 4 on the pH meter so i gave up. I don't know where to go from here. Since I am new to winemaking, my acid test kit is fairly new. I even bought another one thinking it was old, and the second kit, same results. What am i doing wrong?