TA question

[Jennybird]

Hi everyone,
My TA historically has always been high, but I wonder if if I’m doing it correctly. When you put in the last of the three drops, do you wait until the liquid turns completely completely red, because mine will turn red for a second after I add the drop but then it goes back to green or gray or whatever it started as. It always takes about 11 or 12 drops to get it totally red. Also am I looking for a bright vibrant red or a basic red? Thanks!

 

[Mdragger88]

You’re looking for no further change.
If its the same color at 11 drops as it is at 12 drops then it’s 11 drops- aka- ta is 110

 

[pjt]

Keep adding reagent until the drops don't change the color further. If a drop results in color change, count it. If the drop doesn't result in further color change, don't count it (and the test is complete).

 

[Jennybird]

Thank you!

 

[Griswald]

And it will be Barbie pink