Alkalinity, Total

Alkalinity is determined by titration to the appropriate coloimetric endpoint [pH 4.5 (~ 500 mg/L CaCO3), 4.8 (~ 150 mg/L CaCO3), or 5.1 (~30 mg/L CaCO3)] with indicators phenolphthalein and bromcresol green using Hach reagent cartridges (0.1600 or 1.600 M H2SO4) and digital titrator.

(See Method Reference No. 48)

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Water Analysis