Note: The Cation Exchange Capacity (CEC) calculation in the following form uses a straight conversion from parts per million (ppm) of each element to milliequivalents per 100 grams (meq/100g). No factors are employed. If it appears there’s a discrepancy between the calculation below and the CEC offered on your analysis report, the lab may be using one or more conversion factors. We recommend you use the CEC offered by the lab.
calculate cation exchange capacity (cec)
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