Laboratory Safety Rules. 1. Be prepared to work when you arrive at the laboratory. Familiarize yourself with the lab procedures before beginning the lab.

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Presentation transcript:

Laboratory Safety Rules

1. Be prepared to work when you arrive at the laboratory. Familiarize yourself with the lab procedures before beginning the lab. Check for any safety symbols. 2. Perform only those lab activities assigned by your teacher. –Never do anything in the laboratory that is not called for in the laboratory procedure or by your teacher. –Never work without supervision. –Do not engage in any horseplay.

3. Work areas should be kept clean and tidy at all times. –Only lab handouts and notebooks should be brought to the work area. –Other books, purses, backpacks, etc.. should be left at your desk. 4. Clothing should be appropriate for working in the lab. Jackets, ties, and other loose garments should be removed. –Open-toed shoes should not be worn.

5. Long hair should be tied back or covered, especially in the vicinity of open flame. 6. Jewelry that might present a safety hazard, such as dangling necklaces, chains, medallions, or bracelets should not be worn in the lab. 7. Follow all instructions, both written and oral, carefully. Ask your teacher if you don’t understand the instructions.

8. Safety goggles and lab aprons should be worn at all times. 9. Set up apparatus as described manual or by your teacher. Never change the procedure without teacher permission.

10. Always use the prescribed instrument (tongs, test tube holder, forceps, etc.) for handling apparatus or equipment. 11. Keep all combustible materials away from open flames. 12. Never touch any substance in the lab unless specifically instructed to do so by your teacher. 13. Never put your face near the mouth of a container that is holding chemicals.

14. Never smell any chemicals unless instructed to do so by your teacher. When testing for odors, use a wafting motion to direct the odors to your nose. 15. Any activity involving poisonous vapors should be conducted in the fume hood. 16. Dispose of waste materials as instructed by your teacher. 17. Clean up all spills immediately after notifying your teacher.

18. Clean and wipe dry all work surfaces at the end of class. Wash your hands thoroughly. Don’t sit on lab tables. 19. Know the location and proper use of emergency equipment (First aid kit, fire extinguisher, chemical spill shower, eye wash, fire blanket, spill kit, fire alarm). Never use a fire alarm unless it is a real emergency. 20. Report all accidents, no matter how minor, to the teacher immediately.

21. Read and double check labels on bottles before using any chemical. Take only as much as you need. 22. Do not return unused chemicals to stock bottles. 23. When transferring chemicals from one container to another, hold the containers out away from your body. 24. When mixing an acid and water, always add the acid to the water.

25. Avoid eating or touching chemicals. If chemicals do come in contact with your hands, wash them immediately. Don’t eat or drink in the lab or from lab containers. 26. Notify your teacher if you have any medical problems that might relate to lab work, such as allergies or asthma. 27. Try to avoid wearing contact lenses in the lab. Change to glasses, if possible, or notify the teacher.

28. Glass tubing, especially long pieces, should be carried in a vertical position to minimize the likelihood of breakage and to avoid stabbing anyone. 29. Check your glassware for cracks before using. Never handle broken glass with your bare hands. Use a brush and dustpan to clean up broken glass. Dispose of the glass as directed by your teacher.

30. Always lubricate glassware (tubing, thistle tubes, thermometers, etc.) with water or glycerin before attempting to insert it into a rubber stopper. 31. Never apply force when inserting or re- moving glassware from a stopper. Use a twisting motion. If a piece of glassware becomes "frozen" in a stopper, take it to your teacher.

32. Do not place hot glassware directly on the lab table. Always use an insulating pad of some sort. 33. Allow plenty of time for hot glass to cool before touching it. Hot glass can cause painful burns. (Remember: Hot glass looks the same as cool glass.)

34. Exercise extreme caution when using a gas burner. Keep your head and clothing away from the flame. 35. Always turn the burner off when it is not in use or when leaving the area. 36. Do not bring any substance into contact with a heat source unless instructed to do so. 37. Don’t use butane lighters to ignite gas burners.

38. Never look into a container that is being heated. View from the side instead. 39. When heating a substance in a test tube, make sure that the mouth of the tube is not pointed at yourself or anyone else. Point the opening at the wall. 40. Never leave unattended anything that is being heated or is visibly reacting.

41. Use common sense while performing all experiments and try to prevent accidents. 42. Failure to follow the laboratory safety rules can result in disciplinary action, loss of credit and loss of lab privileges. 43. You are financially responsible to replace any equipment that you break.