Intercalibrition 8903. Dissolved organic carbon, and aluminium fractions (ICP Waters report)

Abstract

Ten laboratories in ten countries participated in the third intercalibration, 8903. Based on the general target accuracies of +/- 20%, all the results were acceptable for dissolved organic carbon. Acceptable results for the aluminium fractions are varying from 50 to 75%. Differences in the methods used by the participating laboratories, are obviously the main reason for the great deviations between their results. To obtain comparable results for aluminium fractions, exactly the same method must be used by every laboratory.