In those cases where there is a reason to believe that a significant variation impacts the toxicity of the batch (i.e. based on the ortho-isomer concentration) then a new classification is necessary (e.g. batch 2).
In those cases where there is a reason to believe that a significant variation impacts the toxicity of the batch (i.e. based on the ortho-isomer concentration) then a new classification is necessary (e.g. batch 2).