(27)The classification and labelling criteria set out in this Regulation should take the utmost account of promoting alternative methods for the assessment of hazards of substances and mixtures and of the obligation to generate information on intrinsic properties by means other than tests on animals within the meaning of Directive 86/609/EEC as laid down in Regulation (EC) No 1907/2006. Future criteria should not become a barrier to this aim and the corresponding obligations under that Regulation, and should under no circumstances lead to the use of animal tests where alternative tests are adequate for the purposes of classification and labelling.