 The threat from terrorism in Australia is real. Homemade explosives and toxic weapons can be made from many chemicals found in laboratories. But we can all contribute to keeping Australia safe and secure. The National Code of Practice for Chemicals of Security Concern provides guidance on practical measures you can take to help keep chemicals secure in your laboratory. The Universities of Australia website has additional guidance designed for compliance managers and laboratory supervisors. Whether you work in a laboratory in a university, in the health industry, or in another sector, you can help build a chemical security culture. Be aware of the risks. Read the code to know which chemicals in your laboratory could be used to make explosives or a toxic device. If you're a supervisor or manage the chemical store, understand your chemicals and know normal quantities used for laboratory work. Keep chemicals secure so unauthorised people can't access them. Be alert to unexplained purchasing or suspicious losses and report odd behaviour. This could be an unusual pattern of attendance by staff or students who may be trying to access chemicals while no one is around, breaches in access controls, someone asking questions about chemicals held on site or paying too much attention to your security. You know your laboratory and you know when something just doesn't feel right. Trust your instincts. Report your concerns to the National Security Hotline. You can help keep dangerous chemicals away from terrorists. Know the chemicals. Know the risks. Know the code. For a copy of the code, go to nationalsecurity.gov.au slash chemical security.