Many plants may contain toxins or allergens. Students should be cautioned not to taste or handle plants. Teachers are responsible for familiarizing themselves with any local, provincial, or federal legislation pertaining to plants and animals. If in doubt, inquire. Chemical storage should be organized by groups of compatible compounds, rather than by alphabetical order.
Lasers are capable of causing eye damage.
To reduce risk, lasers rated at a maximum power of 0.5 mW should be used. Contact lenses complicate eye safety. Dust and chemicals may become trapped behind a lens. Gases and vapours may cause excessive watering of the eyes and enter the soft material of the lens. Chemical splashes may be more injurious due to th e inability to remove the lens rapidly and administer first aid.