Pool Math entering results for TA when borates are present

[Bperry]

In my Taylor kit, the instructions for TA say that when borates are present, it will cause the TA measurement to read artificially high, and provides a borate correction multiplier to use to get the real carbonate alkalinity. So my question is whether the pool math app does that correction for me or whether I need to do that manually before I log my TA level in the app.

 

[mknauss]

As long as you are tracking borates, Poolmath manages all corrections needed when using the information to create CSI, calculation of chemistry adjustments, etc.

 

[JamesW]

In my Taylor kit, the instructions for TA say that when borates are present, it will cause the TA measurement to read artificially high, and provides a borate correction multiplier to use to get the real carbonate alkalinity.

Can you show what they say?

 

[Bperry]

Can you show what they say?

Sure. Attached

 

[JamesW]

OK, thanks.

Here is what I got previously, which is different.

Borate C.F (correction factor) based on pH.

pH.......CF

7.2.....0.051

7.4.......0.0786

7.6......0.1248

7.8......0.1989

I will have to recheck my calculations.

Borates in pool - Further Reading

www.troublefreepool.com

 

[Bperry]

So in the app now, my TA before borates were added was 80ppm and now it’s reading 90 and borates reading 30ppm. So as I add acid to lower the pH and TA over time, should I treat it as if the TA will always read 10ppm higher than it really is? I’d like TA to be closer to 70 and so I’m curious how much I should fiddle with it to keep my CSI negative. The pool really likes to be at pH7.8

Edit: I guess it’s not a simple 10ppm delta. It’s 90TA - (7.8pH x.24)= 82.8ppm TA.