It is essential that you keep going over and reminding yourselves of what each symbol means, as well as the consequences it causes. For example, a product may have a ‘hazardous to the environment’ label-how can you dispose of it in a safe way? If a product is flammable, can you use it in all rooms that are being cleaned? Is it safe to use in a science lab? What measures can be taken to control safety? If you have questions on safety hazards and labels you should ask your manager for help or alternatively, visit : https://www.hse.gov.uk/chemical-classification/labelling-packaging/hazard-symbols-hazard-pictograms.htm