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16
Carbonate
Testing
Calculation
Calculation:
Using the measured sample volume, the Dräger tube stain length, and the
tube factor of 2.5 (from the table on page 13) calculate the total soluble
carbonates (CO
2
+ CO
3
-2
+ HCO
3
–
) in the filtrate sample using the follow
-
ing equation:
Carbonate (mg/L) =
2.5 (Darkened Stain Length)
Sample Volume (mL)