Alkalinity test question.

[Whitehat]

Hello,
I've been wondering if on the alkalinity test where it says add the titrant until it turns from green to red, if that means until its like a bright red or when it just doesn't look like green anymore.

Thanks for many help, Whitehat

 

[Richard320]

You add drops until it stops changing colors. Then deduct one.

For instance, say your TA is 100. At 8 drops it starts to turn grey. At 9, a tinge of pink, at 10 it's barbie pink. At 11, it's still barbie pink. The last drop did nothing, so 10 drops. TA= 100.