TA test question

[Farmerswife96]

I was testing the TA yesterday and observed that when I put the 5th drop in, the blue water turned a purple pink color then I added another drop and it turned to pink or "red" as the directions say. So would the TA be 50 or 60 or somewhere in between?

 

[mknauss]

When the last drop makes no color difference, you stop and subtract that last drop.

 

[Farmerswife96]

Thank you!