How red should the TA test be?

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,879
Silver Spring, MD
It isn't a specific color that you are looking for. What you want to do go until you get something in the red family, then continue adding drops until the color stops changing, and finally don't count the drop that didn't change the color any further.