20 Safety Precautions 

^^in the lab^^

• Never do unauthorized experiments.
• Never work alone in laboratory.
• Do not leave an on-going experiment unattended.
• Always inform your instructor if you break any equipment or glassware.
• To put out a fire in a person's hair, use the fire blanket
• To put out a fire in a person's clothing, use the fire blanket.
• If a chemical is spilled on your clothing you should use the safety shower
• Never taste anything.
• Never pipette by mouth; use a pipette filler.
• Never use open flames in laboratory unless instructed by your teacher.
• Check your glassware for cracks and chips each time you use it. Cracks could cause the glassware to fail and cause serious injury to you or lab mates.
• Maintain clean access to all exits, fire extinguishers, electrical panels, emergency showers, and eye washes.
• Clean your lab table and equipment before you leave the laboratory.
• Wait until your teacher checks that you cleaned and organized materials and equipment on your table before leaving your work area.
• ALWAYS wear goggles
• Gloves
• A lab coat
• Have someone authorizing the experiment
• Use common sense
• Common sense is needed for safety in a laboratory.
• Each student should work in a responsible manner and exercise good judgment and common sense.
• If at any time you are not sure how to handle a particular situation, ask your teacher for advice.
• It is always better to ask questions than to risk harm to yourself or damage the equipment.
• Be sure that cables are not in touch with the hot plate.
• Turn off the gas as soon as you finish working with the Bunsen burner.