TFT100 Defective TA or Me?

[tpirovol]

Hi Everyone,

I had my water tested 2x by a pool company to compare with my testing and its very similar except for my TA. They show 80 while my test shows 240, I decided to try out last years bottles and it came back as 80.

Am I doing something wrong?

 

[mknauss]

Total Alkalinity

A drop-based test used to measure the alkalinity in water. Alkalinity helps serve as a … Read more…

www.troublefreepool.com

Read the Notes section about the R0009 tip.

"Sometimes a static electric charge can build up on the R-0009 dropper bottle tip, causing the drops to be smaller than usual and making the test read higher than actual. You can prevent this by wipping the tip of the dropper bottle with a damp cloth or tissue before you start and after each drop."

 

[tpirovol]

I did this as well

 

[mknauss]

Then your TA value is how you tested it.

You might try switching the tips between last years bottles and this years.
The TA reagent should be good from last year if kept in climate controlled area.