Chemistry Lab Safety Rules

 Do Not Pipette By Mouth - Ever You say, "But it's only water." Even if it is, how clean do you think that glassware really is? Using disposable pipettes? I know lots of people who rinse them and put them back! Learn to use the pipette bulb or automated pipetter. Don't pipette by mouth at home either. Gasoline and kerosene should be obvious, but people get hospitalized or die every year, right? I know someone who used his mouth to start the suction on a waterbed to drain it. Do you know what they put in some waterbed additives? Carbon-14. Mmmm...radiation. He couldn't retch fast enough! The lesson is that even seemingly harmless substances may be dangerous!  Dress Appropriately (for chemistry lab, not fashion or the weather) No sandals, no clothes you love more than life, no contact lenses, and long pants are preferable to shorts or short skirts. Tie long hair back. Wear safety goggles and a lab coat. Even if you aren't clumsy, someone else in the lab probably is. If you take even a few chemistry courses you will probably see people set themselves on fire, spill acid on themselves, others, or notes, splash themselves in the eye, etc. Don't be the bad example to others, remembered for all time for something stupid!  Identify the Safety Equipment And know how to use it! Given that some people (possibly you) will need them, know the locations of the fire blanket, extinguishers, eyewash, and shower. Ask for demonstrations! If the eyewash hasn't been used in a while the discoloration of the water is usually sufficient to inspire use of safety glasses.  Don't Taste or Sniff Chemicals For many chemicals, if you can smell them then you are exposing yourself to a dose that can harm you! If the safety information says that a chemical should only be used inside a fume hood, then don't use it anywhere else. This isn't cooking class - don't taste your experiments!  Don't Casually Dispose of Chemicals Down the Drain Some chemicals can be washed down the drain, while others require a different method of disposal. If a chemical can go in the sink, be sure to wash it away rather than risk an unexpected reaction between chemical 'leftovers' later.  Don't Eat or Drink in Lab It's tempting, but oh so dangerous... just don't do it!  Don't Play Mad Scientist Don't haphazardly mix chemicals! Pay attention to the order in which chemicals are to be added to each other and do not deviate from the instructions. Even chemicals that mix to produce seemingly safe products should be handled carefully. For example, hydrochloric acid and sodium hydroxide will give you salt water, but the reaction could break your glassware or splash the reactants onto you if you aren't careful!  Take Data During Lab Not after lab, on the assumption that it will be neater. Put data directly in your lab book rather than transcribing from another source (e.g., notebook or lab partner). There are lots of reasons for this, but the practical one is that it is

1 much harder for the data to get lost in your lab book. You should always read the experiment in advance.

Other Lab Safety Rules

1. Conduct yourself in a responsible manner at all times in the laboratory. 2. Follow all written and verbal instructions carefully. If you do not understand a direction or part of a procedure, ASK YOUR TEACHER BEFORE PROCEEDING WITH THE ACTIVITY. 3. . Never work alone in the laboratory. No student may work in the science classroom without the presence of the teacher. 4. When first entering a science room, do not touch any equipment, chemicals, or other materials in the laboratory area until you are instructed to do so. 5. Perform only those experiments authorized by your teacher. Carefully follow all instructions, both written and oral. Unauthorized experiments are not allowed. 6. Do not eat food, drink beverages, or chew gum in the laboratory. Do not use laboratory glassware as containers for food or beverages. 7. Be prepared for your work in the laboratory. Read all procedures thoroughly before entering the laboratory. Never fool around in the laboratory. Horseplay, practical jokes, and pranks are dangerous and prohibited. 8. Always work in a well-ventilated area. 9. Observe good housekeeping practices. Work areas should be kept clean and tidy at all times. 10. Be alert and proceed with caution at all times in the laboratory. Notify the teacher immediately of any unsafe conditions you observe. 11. Dispose of all chemical waste properly. Never mix chemicals in sink drains. Sinks are to be used only for water. Check with your teacher for disposal of chemicals and solutions. 12. Labels and equipment instructions must be read carefully before use. Set up and use the equipment as directed by your teacher. 13. Keep hands away from face, eyes, mouth, and body while using chemicals or lab equipment. Wash your hands with soap and water after performing all experiments. 14. Experiments must be personally monitored at all times. Do not wander around the room, distract other students, startle other students or interfere with the laboratory experiments of others. 15. Know the locations and operating procedures of all safety equipment including: first aid kit(s), and fire extinguisher. Know where the fire alarm and the exits are located. 16. Know what to do if there is a fire drill during a laboratory period; containers must be closed, and any electrical equipment turned off. 17. Any time chemicals, heat, or glassware are used, students will wear safety goggles. NO EXCEPTIONS TO THIS RULE! 18. Contact lenses may be not be worn in the laboratory. 2 19. Dress properly during a laboratory activity. Long hair, dangling jewelry, and loose or baggy clothing are a hazard in the laboratory. Long hair must be tied back, and dangling jewelry and baggy clothing must be secured. Shoes must completely cover the foot. No sandals allowed on lab days. 20. A lab coat or smock should be worn during laboratory experiments. 21. Report any accident (spill, breakage, etc.) or injury (cut, burn, etc.) to the teacher immediately, no matter how trivial it seems. Do not panic. 22. If you or your lab partner is hurt, immediately (and loudly) yell out the teacher's name to get the teacher's attention. Do not panic. 23. If a chemical should splash in your eye(s) or on your skin, immediately flush with running water for at least 20 minutes. Immediately (and loudly) yell out the teacher's name to get the teacher's attention. 24. All chemicals in the laboratory are to be considered dangerous. Avoid handling chemicals with fingers. Always use a tweezer. When making an observation, keep at least 1 foot away from the specimen. Do not taste, or smell any chemicals. 25. Check the label on all chemical bottles twice before removing any of the contents. Take only as much chemical as you need. 26. Never return unused chemicals to their original container. 27. Never remove chemicals or other materials from the laboratory area. 28. Never handle broken glass with your bare hands. Use a brush and dustpan to clean up broken glass. Place broken glass in the designated glass disposal container. 29. Examine glassware before each use. Never use chipped, cracked, or dirty glassware. 30. If you do not understand how to use a piece of equipment, ASK THE TEACHER FOR HELP! 31. Do not immerse hot glassware in cold water. The glassware may shatter. 32. Do not operate a hot plate by yourself. Take care that hair, clothing, and hands are a safe distance from the hot plate at all times. Use of hot plate is only allowed in the presence of the teacher. 33. Heated glassware remain very hot for a long time. They should be set aside in a designated place to cool, and picked up with caution. Use tongs or heat protective gloves if necessary. 34. Never look into a container that is being heated. 35. Do not place hot apparatus directly on the laboratory desk. Always use an insulated pad. Allow plenty of time for hot apparatus to cool before touching it. 36. Return all equipment, clean and in good condition, to the designated location at the end of the lab period. 37. Leave your lab area cleaner than you found it.

3 QUESTIONS (answers are confidential)

1. Do you wear contact lenses or hearing aids? Yes______No______2. Are you color blind? Yes ______No______3. Do you have allergies? Yes ______No ______If so, please list specific allergies ______

LAB SAFETY AGREEMENT

I, ______(student's name) have read and agree to follow all of the safety rules set forth in this contract. I realize that I must obey these rules to insure my own safety, and that of my fellow students and teachers. I will cooperate to the fullest extent with my instructor and fellow students to maintain a safe science lab environment. I will also closely follow the oral and written instructions provided by the instructor. I am aware that any violation of this safety contract that results in unsafe conduct in the laboratory or misbehavior on my part, may result in my being removed from the lab classroom, detention, receiving a failing grade, and/or further disciplinary action.

______Student signature Date

Dear Parent or Guardian:

We feel that you should be informed regarding Lumberton High School's effort to create and maintain a safe science classroom/laboratory environment. With the cooperation of the teachers, parents, and students, a safety instruction program can eliminate, prevent, and correct possible hazards. You should be aware of the safety instructions your son or daughter will receive before engaging in any laboratory work. Please read the list of safety rules above. No student will be permitted to perform laboratory activities unless this contract is signed by both the student and parent/guardian and is on file with the teacher. Your signature on this contract indicates that you have read this Student Safety Contract, are aware of the measures taken to insure the safety of your son or daughter in the science laboratory, and will instruct your son or daughter to uphold his or her agreement to follow these rules and procedures in the laboratory.

______Parent/Guardian signature Date

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