2.5 Homogeneity studies
studies were performed for the twp contaminated materials. Ten sachets were chosen randomly from each batch produced (N=450), and three independent sample preparations and measurements were performed per sachets(n=3). All 30 measurements for each material were performed with the European Screening Method using the VIDAS SET2 as detection method
In order to keep the results variation low, extracts were analysed as soon as possible after preparation and not stored longer than a few hours before analysis
the limiting factor in terms of workload per day was the sample extraction and concentration by dialysis, not the detection step