Dangerous Goods by Road
while data from internationally harmonised test methods are preferred, in practice, data from national methods may also be used where they are considered as equivalent. in general, it has been agreed that freshwater and marine species toxicity data can be considered as equivalent data and are preferably to be derived using oecd test guidelines or equivalent according to the principles of good laboratory practices (glp). where such data are not available, classification shall be based on the best available data.