I added mine during primary. However I believe someone said They added during secondary. I am curious what the difference would be.
look at the bottle that is marked Sodium Hydroxide - this is the bottle you are putting in so many cc until you get the color change. the solution is going to be marked .1N or .2N. If it is marked .1N your 11 cc will be divided in half and make your TA .55%. Someone with more of a chemistry background than me will have to tell you why the differences and how they work, but I know I have seen 2 different strengths of solutions and you have to do the math for which strength you are using.
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