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1.1 ,These test methods cover the measurement of total or dissolved carbon dioxide present as carbon dioxide (CO2), carbonic acid, bicarbonate ion, and carbonate ion in water:
| , | Range | Sections |
| Test Method A (Gas Sensing Electrode) | 2 to 800 mg/L | 8 to 15 |
| Test Method B (CO2 Evolution, Coulometric Titration) | 5 to 800 mg/L | 16 to 24 |