Lab Safety

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Lab Safety
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General Safety Rules

• 1. Listen to and or read instructions carefully
  before attempting to do anything.
• Wear safety goggles to protect your
  eyes from chemicals, heated materials, or things
  that might be able to shatter.
• (chemicals, heat glass or sharp objects)
• Notify your teacher if any spills or
  accidents occur.

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General Safety Rules

• After handling chemicals, always wash your hands
  with soap and water.
• Washes off any chemical residue.
• During lab work, keep your hands away from your
  face.
• Keeps chemicals out of eyes and mouth.

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General Safety Rules

• 6. Tie back long hair.
• Helps protect from spills and
  fire hazards.
• Loose long hair can swing into a flame and catch
  on fire.
• Roll up loose sleeves.
• Reduces fire spill hazard.

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General Safety Rules

• 7. Wear long pants or skirts and closed toe
  shoes when using chemicals, heat or glassware.

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General Safety Rules

• 8. Know the location of the
• fire extinguisher,
• fire blanket,
• eyewash station,
• Safety Shower and
• first aid kit.

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Who is the Dressed for a Lab?

• Long pants or skirts and closed toed shoes
  protect your legs and feet from spills and sharp
  glass.

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Safety Equipment Locations in Room
H a l l w a y
Fume Hood Switch
Eye Wash
Fire Extinguisher
Fire Blanket
Shower
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9. Fire Blanket

• Yank the blanket out of the wall holder.
• Wrap it around the victim to smother the fire.
• Wrap
• Drop
• Patty Roll

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10. 11. Eye Wash Station

• If you get something from the lab in your eye
• GET IT OUT IMMEDIATELY!
• Don't wait until lunch or the last of the class
  period!
• Retract your eyelid (hold it open)
• Dont squint your eyes
• this restricts water access.
• Run fresh water over your eye for several
  minutes.
• Go to the school nurse immediately afterward.

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12. Safety Shower

• Shower should be used for dire EMERGENCY only!
• If you (or a lab mate) is ON FIRE, position
  yourself (or your lab mate) under the safety
  shower.
• Pull the handlea deluge of water will result.
• Flames will be rapidly extinguished.
• Chemical spills will be washed off. Contaminated
  clothing will need to be removed to protect your
  skin.

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Safety Shower
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13. Fire Extinguisher
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13. Fire Extinguisher

• Should you use a fire extinguisher?
• No - If the teacher is present and conscious.
• No - if the fire big!
• No - if there is lots of smoke (smoke kills)
• No - if fire spreads quickly
• No - if you have doubts
• ONLY IF all these apply. . . .
• Yes - the teacher is not present or conscious,
• Yes - if you are trained, and
• Yes - if a safe exit is nearby

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How to Use a Fire Extinguisher
www.roanoke.edu/safety/fire_extinguishers.htm
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14. 15. If We Must Evacuate the Room

• FIRE!GET OUT NOW!
• Know your primary and secondary means of egress
• Know your fire alarm pull station
• Located at stairwells exits
• Know your assembly area
• Across road next to library by fence
• Close the doors behind you

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General Safety Rules

• 16. Keep your work area uncluttered and the
  walkways free of backpacks.
• Take to the lab station only what is necessary.
• 17. Clean up your lab area at the conclusion
  of the laboratory period.

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General Safety Rules

• 18. It is suggested that you wear glasses
  rather than contact lenses.
• Chemicals can ooze behind contacts and weld the
  contact to the eye.
• 19. Never put anything into your mouth during a
  lab experiment.
• You can accidently poison yourself from chemical
  residues.

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General Safety Rules

• Never horse around or play practical jokes
  in the laboratory.
• Horse play leads to serious accidents.

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General Safety Rules

• Lab activities are an important part of your
  chemistry experience and grade
• Students who do not follow safety rules will NOT
  be allowed to participate in lab activities.
• You will set out the lab and take a zero.

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Glassware Safety

• Chipped or cracked glassware should not be used.
  Show it to the teacher.
• Broken glassware should not be disposed of in
  a classroom trashcan. There is a special glass
  disposal container for it.
• If a piece of glassware gets broken, do not try
  to clean it up by yourself. Notify the teacher.

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Glassware Safety

• When pouring liquids into glassware, make sure
  the container you are pouring into is resting
  on a table at least a hands breadth from the
  edge.
• Pour down a glass stirring rod sometimes is used
  to prevent liquids from splattering.

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Glassware Safety

• 24. When inserting glass tubing into a rubber
  stopper, apply a lubricant like glycerin to the
  glass and use a twisting motion.

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Glassware Safety

• 25. Do not place hot glassware in water. Rapid
  cooling will make it shatter.
• Sometimes explosively

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Chemical Safety

• 26. Wear protective goggles, and have your feet
  and legs covered whenever heating or pouring
  hazardous chemicals.
• 27. Never mix chemicals together unless you are
  told to do so (and then only in the manner
  specified).
• Never taste any chemicals (you should never
  taste anything in the lab).
• Common sense - many are hazardous.
• This is true at home too.

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Chemical Safety

• 29. If you need to smell the odor of a chemical,
  waft the fumes toward your nose with one hand.
  Do not put your nose over the container and
  inhale the fumes.
• 30. Never pour water into a concentrated acid.
• ALWAYS pour acids should be (slowly) into water.

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Chemical Safety

• 31. Follow the instructions of your teacher
  when disposing of all chemicals.
• 32. Wash your hands after handling hazardous
  chemicals.
• 33. NEVER remove any chemical from the lab.

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Electrical Safety

• 34. Lay electrical cords where no one can trip
  on them or get caught in them.
• Be sure your hands and your lab area are dry
  before using electrical equipment.
• Never poke anything into electrical outlets.

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Electrical Safety

• Unplug cords by pulling the plug and not the
  cord.
• Unplug all electrical equipment at the end of
  the lab period.

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Heating Safety

• Let burners and hotplates cool down before
  touching them. Test to see if they are cool
  enough by bringing the back of your hand close
  to them.
• 35. Use tongs and/or protective gloves to
  handle hot objects.
• 36. Never reach across an open flame or burner.

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Heating Safety

• 37. The only type of glassware that may safely
  be heated is either Kimax or
  Pyrex.

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Heating Safety

• When heating a test tube, move it around slowly
  over the flame to distribute the heat evenly.
• 39. While heating a test tube ALWAYS hold it an
  angle with the mouth pointed away from people.

What is wrong here?
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38. cont. Heating Safety

• Only glassware that is thoroughly dry should be
  heated.
• Wet glassware can crack or shatter
• Heat glassware (such as beakers) by placing it on
  a wire gauze platform on a ring stand
  Or or hotplate.
• Do not hold it in your hand.

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Heating Safety

• 40. When lighting a burner, wait until the
  striker is in place before you turn on the
  gas. Otherwise a gas cloud may build up and you
  have an explosion.
• The amount of air can be adjusted by the air
  supply valve below the tube of the burner.
• This regulates the flame temperature and color.
• 41. Never leave a burner or
  hotplate unattended.

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First Aid

• Injury Burns
• What To Do Immediately flush with cold
  water until burning sensation is lessened.
• Alert the teacher immediately!

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First Aid

• Injury Cuts, bruises
• What To Do Do not touch an open wound
  without safety gloves. Pressing
  directly on minor cuts will stop bleeding in
  a few minutes. Apply cold compress to
  bruises to reduce swelling.
• Alert the teacher immediately!

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First Aid

• Injury Fainting
• To Do Provide fresh air and have the person
  recline so that their head is lower than the
  rest of their body.
• Alert the teacher immediately!

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First Aid

• Injury Eyes
• What To Do Flush eyes immediately with plenty
  of water for several minutes. If a
  foreign object is lodged in the eye, do
  not allow the eye to be rubbed.
• Alert the teacher immediately!

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First Aid

• Injury Poisoning
• What To Do Find out what substance was
  responsible for the poisoning and alert the
  teacher immediately!
• Alert the teacher immediately!

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First Aid

• Injury Spills on the skin
• What To Do Flush with large quantities
  of water. For acid spills, apply baking
  soda solution. For base spills, apply
  vinegar or boric acid.
• Alert the teacher immediately!

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First Aid

• Injury Electrical shock
• What To Do Shut off the current at the
  source. Remove wire with rubber gloves.
  Alert the teacher immediately!
• Alert the teacher immediately!

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