4.4.1. Definitions and general considerations

4.4.1.1.   For the purposes of Section 4.4 the following definitions shall apply:

‘PMT’ means a persistent, mobile and toxic substance or mixture that meets the classification criteria set out in Section 4.4.2.1.

‘vPvM’ means a very persistent and very mobile substance or mixture that meets the classification criteria set out in Section 4.4.2.2.

‘log Koc ’ means the common logarithm of the organic carbon-water partition coefficient (i.e. Koc).

4.4.1.2   The hazard class Persistent, Mobile and Toxic or Very Persistent, Very Mobile properties is differentiated into: