Place each solution in a spray bottle and label it. The Demonstration Adjust the nozzles of the spray bottles to give a fine mist and spray the solutions into a roaring bunsen flame. Take care to spray away from yourself and the audience. The colour of the resulting jet depends on the metal used. The solutions can be retained for future use and can be stored in the plastic bottles for several weeks, at least, without apparent deterioration of the bottles.
Students can observe line spectra through hand held spectroscopes.