Table 3.

Modalities and classes for dermal exposure parameters.

Parameters	Description	Class
Exposure scenario	No possible contact of the product with the body	Very low
	Possible contact of the product with a part of the body (e.g., handling of a cloth soaked with a product or tools contaminated by a product)	Low
	Possible generation of splashes or aerosols (e.g., projection of drops during spill operations and projection of oil mists by rotating machines)	Medium
	Possible immersion of a part of the body in the product (e.g., manual placing or removal of parts in chemical baths, during degreasing, and rinsing operations)	High
Exposed surface	One hand	Very low
	Both hands	Low
	Lower or upper limbs	Medium
	The whole body or face	High
Daily amount	< 10 g	Very low
	[10–100 g]	Low
	[100 g–1 kg]	Medium
	[1 kg–10 kg]	High
	≥10 kg	Very high
Duration	<15 min	Very low
	[15 min–1 h]	Low
	[1–4 h]	Medium
	≥ 4 h	High

The modalities are ranked in relative terms, with regards to each parameter, and ranked (from “very low” to “high”).