“Concentration limit” is a specific or general limit value that determines whether a classified impurity, additive or individual component in a substance or mixture is at a level that will affect the classification of the substance or mixture. These limits are used to determine whether a substance is considered hazardous and how it is classified.
If the content of particularly hazardous substances exceeds certain concentrations, these substances may need to be placed on the market with different labelling and safety measures.