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... lack of analytical multi methods Up until now no multi method for the determination of the different class of biocides in wood preservatives has been described Therefore, combination of at least... the determinations were check to allow for analysis of the target compounds at low concentrations Ø The analytical instruments used for accurate qualitative and quantitative analysis of organic. .. carried out in order to assess the accuracy and the day-to-day variation Ø Finally, to evaluate the performance of the purposed methods by the analysis of real wood samples taken from Dr Matthias