Kerry Marsh( B.Ed.,B.Ag.Sc.) is Australia's leading authority on horse hair tissue testing, having tested thousands of horses in Australia, New Zealand Canada, U.S and Europe with a 100% satisfaction rate. She has been invited to speak at Equitana Melb (2012) and Equitana (2013). Kerry specialises in heavy metal toxicities and poisonings in horses and has been published on these subjects. She is a regular contributer to many horse publications and in demand as a guest speaker.