7. Abbreviations and acronyms

CLP: Classification Labelling and Packaging, new European classification of chemical substances

ECVAM: the European Centre for the Validation of Alternative Methods

ECHA: European Chemical Agency

EUDSD: European Dangerous Substances Directive (67/548/EEC), directive classifying chemical substances

GHS: Global Harmonization System, international system for classifying and labeling hazardous substances

ppm: parts per million, number of molecules of the gas in question per million molecules of air. 1 ppm = 10-6 mg per kg or gram per ton or ml per m ³ .