1. Lab Safety!

2. Lab Safety and Equipment
What Do the Following Symbols Mean?

3. Why is this important?

4. How most accidents happen…
Carelessness
Insufficient knowledge
Taking unnecessary risks
Being in too great a hurry

5. 3 Steps to Avoid Accidents…
Reading all procedures so you know what you are going to do
Following the procedures as they are written (Do not do “extra” experiments just for fun. The results may be dangerous or even deadly.)
Immediately report nay accident or injury, no matter how minor, to your teacher

6. Safety Sheet Take this seriously
Bring back signed by parent tomorrow for a 100%

7. Electrical Safety
Follow the teacher’s directions and do not perform any experiment the teacher has not authorized
Remember that the human body is a conductor of electricity
Never use electrical equipment with which you are not familiar or that contains no directions to follow
Hands and work areas, including floors and tables, should be dry
Never overload a circuit
Watch for exposed wires
Make sure all electrical equipment is properly grounded

8. Hand Safety Never force glass tubing into rubber stoppers
Never pick up broken glass with your bare hands
Allow heated glassware to cool before touching it

9. Poison Safety Never taste chemicals as a means of identification
Do not breathe fumes directly
Do not eat or drink in the laboratory
Do not eat or drink from laboratory glassware
Never handle mercury
Label reagent bottles properly
Read bottle labels carefully
Wash hands thoroughly after experiments
If any chemical comes in contact with your skin, rinse area with plenty of cold water and notify the teacher

10. Eye Safety
If any substance, liquid or powdered, splashes or blows into your eyes, wash them out immediately with water and notify your teacher
Wear safety goggles when necessary
All laboratories should have an emergency eye- wash station; know its location
Wearing contact lenses, even with goggles, is dangerous; fumes from chemicals can get under the lenses, causing eye damage

11. Fire Safety Fire extinguishers and fire blankets should be available
Turn off hot plates or burners when not in use
Tie back hair and loose clothing
Use proper procedures when lighting laboratory burners
In case of fire, smother flames with a cloth or fire blanket
When heating the contents of a test tube, point the tube, away from yourself and others

12. Gas Protection
Take great care in noting odors or fumes; use a wafting motion of the hand
Use volatile liquids only in very small quantities and in a well ventilated room
Do not breathe pure gases such as hydrogen, argon, helium, or nitrogen (high concentrations of CO2 can also be dangerous)
Turn off gas valves when not in use

13. Clothing Protection
Confine loose clothing
Wear laboratory aprons

14. Explosion Danger
Use safety shields or screens if there is a potential danger of an explosion or implosion of apparatus
Never use an open flame when working with volatile liquids such as alcohol

15. Sharp Instrument Safety
Always use single-edged razors; double-edged razors are too dangerous
Handle any sharp instrument with extreme care; never cut any material towards you, always cut away from you
Notify your teacher immediately if you are cut in the lab

16. Glassware Safety
Take particular care to handle glassware safely, and never use broken glassware
Never heat glassware that is not thoroughly dry; never pick up any glassware unless you are sure it is not hot; if it is hot, use heat-resistant gloves or beaker tongs
Always clean glassware thoroughly before putting it away
Fire polish ends of glass tubing; do not force glass tubing and funnels into rubber stoppers; glass tubing should be wrapped in toweling when being inserted or removed from rubber stoppers; a lubricant (glycerin or stop cock grease) is always used

17. What is the Problem???

18. Make a list of EVERYTHING you see that is RIGHT and WRONG.

19. CHEMICAL HAZARD LABEL FLAMMABILITY HEALTH REACTIVITY (STABILITY)
Dr. TT Aklinski
SPECIAL
TT Aklinski

20. NFPA CHEMICAL HAZARD LABEL
Least
Serious 4
Most 4 2 3 4
Flammable vapor which burns readily
Substance is stable
Dr. TT Aklinski
TT Aklinski

21. NFPA CHEMICAL HAZARD LABEL
Burns readily.
Diborane
May detonate with heat or ignition.
Severe health risk.
Avoid water.
Dr. TT Aklinski
TT Aklinski

22. MSDS Material Safety Data Sheet On file for all purchased chemicals.
Includes all information shown on a chemical label and more.
Different formats are used by different chemical companies.
Dr. TT Aklinski
TT Aklinski

23. MSDS
Dr. TT Aklinski
TT Aklinski

24. Closing the Lesson
If any substance splashes or blows into your eyes, what should you do?
What kinds of safety apparel do you wear in the science laboratory?
If your partner wants to perform an experiment that he/she thought up, what should you tell him?
Before leaving the laboratory for your next class, what should you do?
A chemical solution has spilled on your skin. What is the first thing you need to do?
Draw a floor plan of your classroom and identify the location of the eyewash fountain, fire blanket, and fire extinguisher.
If your hair is long, what precautions will you take in the laboratory?
What does wafting mean?
Why is a lubricant used when inserting glass tubing into a rubber stopper?
List four main causes of laboratory accidents.