What are the correct rules for the safe use of Bunsen burners?
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The safe use of Bunsen burners involves following these correct rules:
1. Familiarize yourself with the operation of the Bunsen burner before using it.
2. Only use Bunsen burners in well-ventilated areas or under a fume hood if required.
3. Clear the area around the Bunsen burner from any flammable materials or substances.
4. Ensure there are no loose papers, clothing, or other potentially ignitable objects near the open flame.
5. Tie back long hair and secure loose clothing to prevent any accidental contact with the flame.
6. Use a heat-resistant, non-slip mat or pad under the Bunsen burner to prevent it from tipping over.
7. Always turn on the gas supply before igniting the burner and only light the burner with a sparker or a lit matchstick.
8. Adjust the air vents on the Bunsen burner to control the flame type (most commonly a blue flame for efficient heat transfer).
9. Never leave a lit Bunsen burner unattended, and always turn it off completely once finished using it.
10. Wait for the burner to cool down before storing or moving it.
11. In case of any accident or emergency, know the location of fire extinguishers and emergency equipment, and how to use them.
Following these rules helps ensure the safe and appropriate use of Bunsen burners in laboratories or other settings.