In nature, lakes and rivers contain carbon dioxide in concentrations smaller than 10 mg/L (or ppm), however, stagnant or contaminated water can contain higher concentrations because of organic decomposition. This creates a problem for fish farming applications.

Carbon dioxide is added to drinking water during the final phases of the purification process. In water softening processes carbon dioxide must be kept at a certain level in order to prevent corrosion.

• Method: Tritration
• Range: 0.0-10.0 mg/L - 0.0-50.0 mg/L - 0-100 mg/L
• Smallest Increment: 0.1 mg/L - 0.5 mg/L - 1 mg/L
• Chemical Method: Phenolphthalein
• Number of Tests: approx. 110
• Weight: 460 g