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Carbon Dioxide (Dissolved) Test Kits

Titrimetric Kits

Range MDL Method Type Kit Cat. No. Refill
10 - 100 ppm 10 ppm Caustic Titrant with pH Indicator Titrets K-1910
100 - 1,000 ppm 100 ppm Caustic Titrant with pH Indicator Titrets K-1920
250 - 2,500 ppm 250 ppm Caustic Titrant with pH Indicator Titrets K-1925

Note: Click on the ‘Kit Cat. No.’ to view the test instructions.

CHEMetrics offers test kits employing the Caustic Titrant with pH indicator method to deliver sensitivity and accuracy within two minutes or less. Based on CHEMetrics patented Self-Filling Reagent Ampoule technology. Premixed. Premeasured. Precise. Each kit contains 30 tests.

The Caustic Titrant with pH Indicator Method

CHEMetrics' carbon dioxide test kits employ a sodium hydroxide titrant and phenolphthalein indicator. Results are expressed as ppm (mg/l) CO2.

APHA Standard Methods, 22nd ed., Method 4500-CO2 C -1997. ASTM D 513-82, Total and Dissolved Carbon Dioxide in Water, Test Method E.


Dissolved carbon dioxide (CO2) is naturally present as a result of animal respiration, the decay of organic matter, and the decomposition of certain minerals. It is the major source of acidity in unpolluted water samples. Surface waters typically contain less than 10 ppm (mg/l) dissolved CO2, while ground waters, particularly if deep, may contain several hundred ppm (mg/l).

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