In method 8326, the interference section for pH lists 3 different pH ranges. Which pH range should the test be run at?
The proper pH range for Aluminum testing
According to the method, pH ranges 2.9-4.9 or 7.5-11.5 should work. However, the pH range of 2.9-4.9 would be preferable as our instruments are calibrated at pH 2.5-3