Safety in the Laboratory
Rules of Laboratory Conduct
1. Perform laboratory work only when your teacher is present. Unauthorized
or unsupervised laboratory experimenting is not allowed.
2. Your concern for safety should begin even before the first activity.
Always read and think about each laboratory assignment before starting.
3. Know the location and use of all safety equipment in your laboratory.
These should include the safety shower, eye wash, first-aid kit, fire extinguisher,
and blanket.
4. Wear a laboratory coat or apron and protective glasses or goggles for
all laboratory work. Wear shoes (rather than sandals) and tie back loose
hair.
5. Clear your benchtop of all unnecessary material such as books and clothing
before starting your work.
6. Check chemical labels twice to make sure you have the correct substance.
Some chemical formulas and names may differ by only a letter or a number.
7. You may be asked to transfer some laboratory chemicals from a common
bottle or jar to your own test tube or beaker. Do not return any excess
material to its original container unless authorized by your teacher.
8. Avoid unnecessary movement and talk in the laboratory.
9. Never taste laboratory materials. Gum, food, or drinks should not be
brought into the laboratory. If you are instructed to smell something,
do so by fanning some of the vapor toward your nose. Do not place your
nose near the opening of the container. Your teacher will show you the
correct technique.
10. Never look directly down into a test tube; view the contents from the
side. Never point the open end of a test tube toward yourself or your neighbor.
11. Any laboratory accident, however small, should be reported immediately
to your teacher.
12. In case of a chemical spill on your skin or clothing rinse the affected
area with plenty of water. If the eyes are affected water-washing must
begin immediately and continue for 10 to 15 minutes or until professional
assistance is obtained.
13. Minor skin burns should be placed under cold, running water.
14. When discarding used chemicals, carefully follow the instructions provided.
15. Return equipment, chemicals, aprons, and protective glasses to their
designated locations.
16. Before leaving the laboratory, ensure that gas lines and water faucets
are shut off.
17. If in doubt, ask!