Ring Test OECD 306 Workshop

The OECD 306 Ring Test Workshop: Improving Marine Biodegradation Screening Testing will be held at Newcastle University in Newcastle-upon-Tyne, UK, on 3-4 May 2018. The event is supported by Cefic-LRI.

From 2016-18, an international Cefic-LRI funded ring test was coordinated by Newcastle University, comparing an improved marine BST (comprising seawater concentrated with tangential flow filtration), a respirometric marine BST (comprising non-concentrated seawater), and a standard OECD 306 closed bottle test across 13 laboratories in the UK, Norway, Germany, Italy, Canada, USA and Japan. Five test chemicals, representing a range of different biodegradation potentials, were used to validate the new method and included; a positive reference compound (sodium benzoate), a negative reference compound (pentachlorophenol) and three compounds with variable reported degradation (4-nitrophenol, triethanolamine and hydrolysed polyacrylamide).