Division 7 EXPRESSION OF THE RESULTS

Formula and calculation of results

The organic matter extracted from ion exchange resins, in mg/l, is given by:

500 (m1 – m2)

where m1 and m2 are expressed in grams.

The corrected weight (mg/l) of the organic matter extracted from ion exchange resins is given by:

500 (m1 – m2 – m3 + m4)

where m1, m2, m3 and m4 are expressed in grams.

The difference in the results between two parallel determinations carried out on the same sample must not exceed 0,2 mg/l.