1. Sri Lanka Atomic Energy Board; Wellampitiya Sri Lanka
2. Nuclear Science and Instrumentation Laboratory (NSIL); International Atomic Energy Agency (IAEA); Seibersdorf Austria
3. Department of Chemistry; University of Otago; Dunedin New Zealand
4. Tea Research Institute of Sri Lanka; Thalawakelle Sri Lanka
5. Food and Environmental Protection Laboratory (FEPL); International Atomic Energy Agency (IAEA); Seibersdorf Austria