ASTM-D513 › Standard Test Methods for Total and Dissolved Carbon Dioxide in Water
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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:
Test Method A (Gas Sensing Electrode)
2 to 800 mg/L
Test Method B (CO2 Evolution, Coulometric Titration)
5 to 800 mg/L
1.2 Carbon dioxide may also be detected from carbonates present in particulates in samples.
1.3 Test Method A is applicable to various natural waters and brines.
1.4 Test Method B is applicable to natural waters, brines, and various industrial waters as delineated in .
1.5 It is the user's responsibility to ensure the validity of these test methods on waters of untested matrices.
1.6 Several test methods were discontinued from this standard in 1988. Refer to for historical information.
1.7 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
carbon dioxide (CO
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June 15, 2016