2. INTRODUCTION
Working with chemicals has been historically viewed as a very risky task

6. Introduction
Experience shows that following safety regulations reduces the probability of accidents, including toxic exposures, to negligible levels

9. Introduction
Before you begin an experiment in the lab, ask yourself, “What would happen if .. ?”

10. Your Responsibility for Accident Prevention

11. especially you...... Accident Prevention
Accident prevention is a collective responsibility that requires the full cooperation of everyone in the laboratory
especially you......

12. Personal Protection Equipment (PPE)

13. Personal Protection Equipment (PPE)
Eye Protection
Everyone in the laboratory, including visitors, must wear chemical splash goggles (not safety glasses or spectacles) at all times, even when not performing a chemical operation

14. Personal Protection Equipment (PPE)
Eye Protection
Normal prescription eyeglasses do not provide appropriate laboratory eye protection
Contact lenses cannot provide adequate protection in any environment in which an accidental chemical splash can reasonably be expected

15. Personal Protection Equipment (PPE)
Face Protection
When necessary, appropriate laboratory bench shields and use face shields wide enough and long enough to protect your neck and ears must be used

16. Personal Protection Equipment (PPE)
Clothing
Clothing worn in labs should
offer protection from splashes and spills;
be easily removable in case of accident;
be at least fire resistant
Non flammable, and nonporous lab aprons are better than lab coats

17. Personal Protection Equipment (PPE)
Clothing
If a lab coat is used instead of an apron, it should have snap fasteners rather than buttons so it can be easily removed

18. Personal Protection Equipment (PPE)
Clothing
wear shoes with uppers made of leather or polymeric leather substitute.
Do not go barefoot or wear sandals.
Do not wear shoes that have high heels or open toes, uppers made of cloth, woven leather strips, or other woven material.

19. Personal Protection Equipment (PPE)
Clothing
Shorts, cutoffs, and miniskirts unnecessarily expose your skin to potential corrosives and are not safe.
Constrain long hair and loose clothing.

20. Personal Protection Equipment (PPE)
Clothing
Constrain long hair and loose clothing (e.g. شماغ).

21. Personal Protection Equipment (PPE)
Clothing
Do not wear jewellery (e.g. rings, bracelets, and wristwatches )
jewellery can be damaged by chemical fumes and spills
Chemical seepage in between the jewellery and skin can put corrosives in intimate contact with your skin

22. Personal Protection Equipment (PPE)
Clothing
Wearing jewellery increases the risk of harmful electrical shocks if comes in contact with electrical sources
jewellery also can catch on equipment, causing accidents.

23. Personal Protection Equipment (PPE)
Gloves
Gloves are very important in labs
Gloves come in different types and materials (e.g. latex, neoprene, butyl rubber)
Use gloves correctly
Always check your gloves before each use to ensure the absence of cracks and small holes

25. Personal Protection Equipment (PPE)
Gloves
To avoid unintentionally spreading chemicals, remove your gloves before
leaving the work area
handling such things as telephones, doorknobs, writing instruments, laboratory notebooks, and textbooks

26. Personal Protection Equipment (PPE)
Gloves
Be aware that no glove material can provide permanent protection
If a chemical diffuses through a glove, it is then held against your skin and you could receive more exposure than if you hadn’t worn a glove at all

27. Personal Protection Equipment (PPE)
Gloves
Do not reuse gloves (such gloves should be should be treated as hazardous waste)

28. Lab Safety Equipment
Fire
Extinguisher
Safety Shower
Eye Wash

29. Laboratory emergency deluge shower (safety shower)

30. Eyewash fountain

31. Fire extinguisher

32. Fire Blanket

33. Protection from toxic fume
Fume Hood

35. Lab Safety Symbols Found in your textbook
Glassware
Heat
Eye and Face
Sharps
Electrical
Animal
Chemical
Fire

36. Other Chemical Hazards and Symbols
Flammable
Explosive
Toxic/Poison
Irritant
Corrosive
Environmental

37. Chemical Hazard Symbols and Definitions
Flammable – Any substance that will burn if exposed to an open flame.
Explosive – A substance that may explode if exposed to heat or flame.

38. Chemical Hazard Symbols and Definitions
Toxic/Poison – A substance that can lead to death if inhaled, ingested, or absorbed by the skin.
Corrosive – A substance that can destroy or burn living tissue and can eat away at other materials.

39. Chemical Hazard Symbols and Definitions
Irritant - A substance that causes inflammation upon contact with skin or mucous membranes.
Environmental - Substances that are harmful to the environment. They must be disposed of properly, not washed down the drain.

40. Laboratory Rules No eating or drinking in labs
Do not enter stockroom or back halls
Clean up after yourself

41. Laboratory Etiquette Clean your personal workspace after use
Wipe down benches with disinfectant before and after use.
Ensure that no trash is left behind
No trash in the sinks
Push in chairs