... into one of the following categories:high-, medium-, and low-risk products. Each stage of the procedure leadsto either an assessment of the risk (and therefore classification in one of the risk ... factor of 10 to 100 , and even 100 0, depending on the biologi-cal material used [15].• Field tests hardly allow the assessment of the effects of certain mol-ecules, shown to be toxic in the laboratory, ... remain,particularly in relation to the reliability of the tests requested and theirfeasibility. The assessment of the effects of plant protection products isbased on the calculation of the Hazard Quotient,...