Is there a way to determine the actual ph from the acid/base demand test? For example if it takes 6 drops to get the ph down to 7.6 what is the ph? 8.0? 8.3?
Getting ph from demand test
- Thread starter keene3b07
- Start date
The demand test is more a measure of TA. You could probably make an educated guess of pH if you know TA, but you are way better off just testing TA and pH and forgetting the demand test.
Once you get an amount of acid required to lower the pH to 7.6 from the acid demand chart, you can use poolmath to see what matches.
For example, if the acid demand test indicated that 64 oz of acid would lower the pH to 7.6, you would put 7.6 in the target column and an estimated value in the "Now" column.
If the amount of acid is the same, then you know that the Now column is correct. If it's low, raise the Now value until the amount of acid matches.
Note that the TA and borate levels need to be entered for the calculation to work.
For example, if the acid demand test indicated that 64 oz of acid would lower the pH to 7.6, you would put 7.6 in the target column and an estimated value in the "Now" column.
If the amount of acid is the same, then you know that the Now column is correct. If it's low, raise the Now value until the amount of acid matches.
Note that the TA and borate levels need to be entered for the calculation to work.
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