Når blandingen i sin helhed er blevet testet for at bestemme dens toksicitet for vandmiljøet, kan disse oplysninger anvendes til klassificering af blandingen efter de kriterier, der er aftalt for stoffer.
When the mixture as a whole has been tested to determine its aquatic toxicity, this information can be used for classifying the mixture according to the criteria that have been agreed for substances.