An incident earlier today involving school children on excursion to Dubbo's Western Plains Zoo, highlights the importance of chemical safety and risk assessment for public venues and school excursions. The incident involved over 130 Sydney school children being taken to hospital for treatment after it was alleged rainwater mixed with disinfectants used to clean the students bicycle helmets, washed into their eyes. A spokesperson from the zoo was reported in today's Sydney Morning Herald website as saying "we've used that agent for four years without incident ... and we had other groups of children out in the rain this week." The incident continues to be investigated by the zoo. All chemicals should be used strictly in accordance with directions provided in the product's Material Safety Data Sheet (MSDS). Risk assessments for school excursions should consider all foreseeable safety risks and medical response procedures.