Laboratory Safety

1
Laboratory Safety

• Little Johnny took a drink,Now he shall drink no
  more.For what he thought was H2O,Was H2SO4.

2
Conduct yourself in a responsible manner at all
times in the lab!

• Horseplay, practical jokes, and pranks are
  dangerous and prohibited
• ALWAYS, remain at your assigned lab station.
• Students are never permitted in the science
  storage cabinets or preparation areas unless
  given specific permission by their instructor.

3
Dont Touch!

• When first entering a science room, do NOT touch
  any equipment, chemicals, or other materials
  until you are instructed to do so.

4
Observe good housekeeping practices!

• Work areas should be kept clean and tidy at all
  times.
• Lab instructions and a pen/pencil are the only
  items allowed in a lab area during an activity.
• Other materials (books, purses, etc.) should be
  stored in your locker or desk.
• Keep aisles clear. STAND during labs, and push
  your chair under your desk.

5
Follow all written and verbal instructions
carefully!

• If you do not understand a direction or part of a
  procedure, ask the instructor before proceeding.
• Perform ONLY those experiments authorized by the
  instructor. Unauthorized experiments are
  prohibited!
• Set up and use equipment as directed in the lab
  instructions.

6
Absolutely NO food, drink, or gum in the
laboratory!
7
Safety Equiptment

• Know the locations and operating procedures of
  all safety equipment including

8
First Aid Kit
9
Eyewash Station
10
Safety Shower
11
Safety Goggles
12
Fire Extinguishers
13
Fume Hood
14
Ventilation and Emergency Power Switches
15
Wastes

• Never mix chemicals in sinks drains.
• Sinks are to be used only for water and those
  solutions designated by the instructor.
• Paper towels, matches, and all other solid
  materials should be disposed of the proper waste
  container (i.e. trash can) and NOT left in the
  sink!

16
Laboratory Hygiene

• Keep hands away from face, eyes, mouth, and body
  while using chemicals or preserved specimens.
• Wash your hands with soap and water after
  performing all experiments.
• Clean, rinse, and dry all work surfaces
  (including sink) and lab equipment at the end of
  an experiment.
• Return CLEAN equipment to the proper storage area.

17
If there is a fire drill

• Containers must be closed
• Fume hood must be turned off
• Electrical equipment must be unplugged and turned
  off

18
Sharp Instruments

• Always carry with tips and points pointing down
  and away.
• Always cut away from your body.
• Grasp sharp instruments by the handles only.
• Never try to catch falling sharp instruments.

19
Clothing

• Any time chemicals, heat or glassware are used,
  students will wear laboratory goggles. There are
  no exceptions to this rule!
• Long hair must be tied back and dangling jewelry
  and loose or baggy clothing must be secured.
• Lab aprons have been provided for your use and
  should be worn during laboratory activities.

20
Accidents and Injuries

• Report any accident or injury to the instructor
  immediately.
• If a chemical should splash in your eyes or on
  your skin, immediately flush with with running
  water and notify the instructor.
• If a mercury thermometer is broken, mercury
  must not be touched. Notify the
  instructor immediately.

21
Handling Chemicals

• All chemicals in the laboratory are to be
  considered dangerous. Do not touch, taste, or
  smell any chemicals unless specifically
  instructed to do so.
• Demonstrate the proper technique for smelling
  chemicals.
• Check the label on chemical bottles twice before
  removing any of the contents.
• Take only as much chemical as you need.
• Hold chemical containers away from your body.
• Never remove chemicals or other materials from
  the laboratory.
• When transferring chemicals from one part of the
  laboratory to another, hold them securely and
  walk carefully.

22
Handling Glassware and Equipment

• Never handle broken glass with your bare hands.
  Use a brush and dustpan to clean up broken glass.
  Place broken or waste glassware in the
  designated disposal container.
• When removing an electrical plug from its socket,
  grasp the plug, not the electrical cord. Hands
  must be completely dry before touching an
  electrical switch, plug, or outlet.
• Examine glassware before each use. Never use
  chipped or cracked glassware. Never use dirty
  glassware.

23
Handling Glassware and Equipment (cont.)

• Report damaged electrical equipment immediately.
  Look for things such as frayed cords, exposed
  wires, and loose connections. Do not use damaged
  electrical equipment.
• If you do not understand how to use a piece of
  equipment, ask the instructor for help.
• Do not immerse hot glassware in cold water it
  may shatter.

24
Heating Substances

• Take care that hair, clothing, and hands are a
  safe distance from an open flame at all times.
  Never reach over an exposed flame.
• Never leave anything that is being heated or is
  visibly reacting unattended. Turn the hot plate
  off when not in use.
• Do not point the open end of a test tube being
  heated at yourself or anyone else. Never look
  into a container that is being heated.
• Heated metals and glass remain very hot for a
  long time. They should be set aside to cool and
  picked up with caution.