Usually the studies for REACH information requirements on ecotoxicity, toxicity and physical-chemical properties are generated using test guidelines. These official guidelines have been approved by the OECD and EU.
This webpage gives practical information and tools in relation to help in using of existing information and non-test methods (i.e. predictions) as a first step to meeting REACH information requirements. The information presented is based on the available ECHA Guidance and Practical Guides published earlier.
The grouping of substances and read-across offer a possibility for adaptation of the standard information requirements of the REACH Regulation, with the conditions for using grouping and read-across approaches to fulfil information requirements set in Annex XI, 1.5.