Der skal udføres test i mindst fire jordbundstyper, hvis det på grund af svag adsorption (f.eks. Koc < 25 l/kg) ikke ud fra adsorptions- og desorptionstestene, jf. punkt 7.1.2, er muligt at opnå pålidelige adsorptionskoefficientværdier.
Studies in at least four soils shall be carried out where in the adsorption and desorption studies provided for under point 7.1.2 it is not possible to obtain reliable adsorption coefficient values due to weak adsorption (such as Koc < 25 L/Kg).