How to prepare 100 mg/l total alkalinity water? Is it just simply add 1000 g CaCO3 to 10 liters of distilled water? And how if we use CaMg(CO3)2, CaO, or Ca(OH)2?
It is better to use the equivalent amount of CaO or Ca(OH)2 because these dissolve faster.
Alakalinity is generally present in the form of HCO3- or CO32- in water, which expressed in terms of mg/L (as CaCO3). So if you want to prepare 100 mg/L of total alkalinity, add the equivalent weight of NaCO3 or NaHCO3 in water.
For example: The equivalent weight of CaCO3 is 50. Therefore, for 100 mg/L alkalinity, you have to add 2 milli eqivalents of either Na2CO3 or NaHCO3 in water.
Dear All, thanks for the answers.
Mr. Singh, does it has the same buffer effect as using CaCO3?
If you want same pH (I believe you meant buffer), better add Na2CO3.
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