Carbon Dioxide (dissolved)
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Method
References: APHA Standard Methods, 20
th
ed., pp. 4-
31, Method 4500-CO
2
C (1998). ASTM D 513-82, Total
and Dissolved Carbon Dioxide in Water, Test Method E.
Dissolved carbon dioxide (CO
2
) is naturally present as
a result of animal respiration, the decay of organic mat-
ter, 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 CO
2
, while ground waters, particularly if deep,
may contain several hundred ppm (mg/L).
CHEMetrics’ carbon dioxide test kits employ a sodium
hydroxide titrant and phenolphthalein indicator. The
kits contain a neutralizer solution to correct for sulfide
interference. Results are expressed as ppm (mg/L) CO
2
.
Visual Kits
Range: 10-100 ppm
MDL: 10 ppm / Method: Caustic Titrant with pH Indicator
Cat#
Titrets Kit K-1910
Increments:
10, 11, 12, 13, 14, 15, 16, 18, 20, 25, 30, 35, 40, 50, 70, 100 ppm
Kit comes in a cardboard box and contains everything needed to perform 30
tests: thirty ampoules with valve assemblies, Activator Solution, Neutralizer
Solution, titrettor, 25 mL sample cup, 1.0 mL syringe, instructions, and MSDS.
Range: 100-1000 ppm
MDL: 100 ppm / Method: Caustic Titrant with pH Indicator
Cat#
Titrets Kit K-1920
Increments:
100, 110, 120, 130, 140, 150, 160, 180, 200, 250, 300, 350, 400,
500, 700, 1000 ppm
Kit comes in a cardboard box and contains everything needed to perform 30
tests: thirty ampoules with valve assemblies, Activator Solution, Neutralizer
Solution, titrettor, 25 mL sample cup, 1.0 mL syringe, instructions, and MSDS.
Range: 250-2500 ppm
MDL: 250 ppm / Method: Caustic Titrant with pH Indicator
Cat#
Titrets Kit K-1925
Increments:
250, 275, 300, 325, 350, 375, 400, 450, 500, 625, 750, 875, 1000,
Kit Components common to Carbon Dioxide
1250, 1750, 2500 ppm
Description Cat#
Kit comes in a cardboard box and contains everything needed to perform 30
tests: thirty ampoules with valve assemblies, Activator Solution, Neutralizer
Sample Cup Pack, 25 mL (6 ea) A-0013
Solution, titrettor, 25 mL sample cup, 1.0 mL syringe, instructions, and MSDS.
Syringe Pack, 1.0 mL (6 ea) A-0027
Titrettor Pack (1 ea) A-0053
Instructions are posted on our website.
If no shelf-life is listed for a product, then the shelf-life is at least 2 years.
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