He joined the Government Laboratory in 1970 and retired in early 2010. He was Senior Chemist of the Government Laboratory from 1992 to 2010. Mr. Au Yueng has extensive experience in different areas of analysis, including environmental, pharmaceutical, food and dangerous goods. He is an assessor for Hong Kong Laboratory Accreditation Scheme (HOKLAS) and is knowledgeable on accreditation and laboratory management system. His hand-on and teaching experiences in various fields of testing and accreditation form an invaluable asset for our programme. He is a Chartered Chemist (CChem) and Fellow of the Royal Society of Chemistry (FRSC), UK now.