Optimising testing strategies for classification of human health and environmental hazards – A proof-of-concept study

Highlights • Testing of chemicals does not always inform their subsequent risk management.• Optimised testing strategies can improve efficiency of classification and labelling.• Hazard pictograms were used to reflect the protection level for a given chemical.• Two strategies led to the same protection level and required fewer tests.• Another strategy led to the same protection level and reduced animal testing.