Total Alkalinity vs. Adjusted Total Alkalinity
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Posted

When I go to 1 pool store they calculate an adjusted total alkalinity with their Biogard machine. Other stores calculate just total alkalinity which seems identical with a normal test kit. The adjusted alkalinity is always lower. I don't understand the difference of TA vs. adjusted TA and which makes sense. I'm estimating it makes a difference of about 25 - 35 lower for adjusted TA. I appreciate some clarification. Thanks

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I need clarification on TA vs
Posted

I need clarification on TA vs. Adjusted TA in order to keep pool chemistry correct. Thanks

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Please clarify TA vs.
Posted

Please clarify TA vs. Adjusted TA

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When pool stores do a total
Posted

When pool stores do a total alkalinity test, the stabiliser level in the pool throws off the total alkalinity reading they get. So when the computer gives you the adjusted TA reading, this is simply the TA reading adjusted for the stabiliser level. AKA TA is the level the technician got, Adjusted TA is the actual level.

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Oliver, thanks for the reply.
Posted

Oliver, thanks for the reply. I am surprised I have not heard this before. So I interpret that the TA I get with my simple Pentair kit, or pool stores / my pool repair contractor get with their Taylor kits are wrong (essentially high)? I should adjust the TA to the adjusted TA reading? My stabiliser normally runs around 100 which I think is normal. Should anything be done with the stabiliser to take it out of the equation? Thanks again Oliver.

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