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Laboratory Information
A lab drawer stocked with glassware and supplies will be checked out to you on the first day of lab. You are responsible for maintaining this glassware throughout the course, and returning it in good condition at the end of the semester. Your course fee covers only chemicals and general lab maintenance, you will be charged for any losses or breakages you incur. All fees must be paid before you can receive a grade!
You must follow laboratory safety rules in order to be allowed in the laboratory! Proper attire is required. No tank tops, shorts, or sandals are to be worn in the laboratory. Long hair should be restrained. OSHA-approved safety goggles, not safety glasses, are always required in the laboratory. You must provide your own goggles. Check with your laboratory instructor before purchasing goggles so that you will obtain acceptable ones. Contact lenses are strongly discouraged in the laboratory. If you do not agree to these rules you will not be allowed in the laboratory, and will receive a zero for the laboratory assignment.
Chemistry Laboratory Safety Contract
General Use
Safety is the priority of everyone, including you. Please read the following rules thoroughly, sign, and return the second page to your instructor before beginning any work in the laboratory. Keep the first for reference.
I. Personal Protection
- Eye protection is always required in the lab. Approved chemical splash goggles must be worn whenever chemicals are in use anywhere in the lab.
- Know where all the safety equipment is and how to use it: eyewash fountains, safety showers, fire extinguishers, etc.
- Wear appropriate clothing. Shorts or open-toed shoes are not allowed. Long hair should be tied back. Loose, dangly clothing or jewelry can present a hazard and should be avoided.
- If you get anything on your skin, wash it off immediately with soap and warm water. Notify your instructor.
- Report any injury, spill, or breakage to your lab instructor, so that proper clean-up procedures may be followed.
- Do not perform unauthorized experiments or change the written procedure without your instructor’s approval.
- Never work alone in the lab.
- Do not bring food or drink into the lab.
- Keep the aisles clear and your work area uncluttered.
- Prepare for the lab. Read over the experiment beforehand and complete any pre-laboratory assignment.
- Be aware of your neighbors’ activities.
- Use fume hoods when necessary to avoid the accumulation of smoke or noxious vapors in the lab.
- Be cautious when using chemicals: read labels and understand hazards. If you are concerned about a reagent, ask to see its Material Safety Data Sheet, on file in the chemical stockroom.
- Wash your hands thoroughly upon leaving the lab.
II. Waste and Cleanup
All waste must be disposed of properly. Some wastes are safe and may be washed down the drain with running water. Others must be collected for appropriate disposal. Each laboratory experiment has a written waste disposal procedure, and your instructor is responsible for making sure this is followed. It is your responsibility to follow your instructor’s instructions. Pay special attention to placing used regents in the proper collection container and not mixing them up. For example, pouring a toxic cobalt solution into an acidic solution that just needs to be neutralized makes the acidic solution toxic. Do not dump anything down the drain without clearing it with your instructor first!
Proper waste disposal includes minimizing the volume of waste. When rinsing into waste containers, one or two small rinses with swirling will usually be sufficient to eliminate any contamination. After the low-volume rinses are placed into the waste container, the glassware is generally clean enough to wash in the sink. Do not fill the waste container with excessive amounts of rinse water.
Broken mercury thermometers and any mercury spilled from them are to be cleaned up immediately and disposed of in a designated elemental mercury waste container. Contact your instructor, who will direct the cleanup.
All broken or chipped glassware must be disposed of in broken glass containers. Do not put glass in garbage cans.
Return chemicals to their proper places immediately upon being finished with them.
Return all lids to containers immediately after use. This reduces the risk of exposure to toxic chemicals and reduces the risk of cross-contamination of chemicals or degradation due to exposure to air.
Keep the balances, fume hoods, and counter areas clean. Clean up any spills. Consult your instructor for proper cleanup procedures.
Make sure all lights, ovens, hot plates, stir plates, computers, gas, water, etc. are off before leaving the lab.
Chemistry Laboratory Safety Contract: Agreement
I have read and agree with the safety rules set forth above. I realize that I must obey these rules to ensure my safety, as well as the safety of others. I am aware that any violation of these rules can result in expulsion from the laboratory and a zero on the day’s experiment, and that continued violation will result in receiving an F for the laboratory class.
Instructions:
Read the safety contract.
Remove this page from the syllabus.
Fill in the blank below with your name, sign, and date, and turn this page into your instructor.
Name:_______________________________________________
Signature:____________________________________________ Date:__________________________
Laboratory Risk
Students should realize that they are voluntarily exposing themselves to a variety of chemicals, some of which could be irritating or hazardous with excessive exposure. For those persons with sensitive medical conditions such as allergies, precautions such as wearing additional protective garments, delaying enrolling, or even not enrolling in a class may be necessary. Women who are in their first trimester of pregnancy should avoid exposure to many chemicals unless approved by their physician.
Never taste or smell a chemical or use your mouth to pipette. Wash your hands frequently to avoid accidental contamination of yourself. Wash your hands thoroughly and ensure your clothing is free of chemical contaminants before you leave the lab. For disposal of chemical waste follow the instructions given. Nothing goes into or down the sink without expressed direction. Should you have any doubts about chemical disposal check with your instructor. You are responsible for keeping your work area clean. Wipe up spilled solids or liquids immediately. Always replace the lids or caps on reagent bottles. Never return chemicals to the original container. Turn off water or electrical equipment when you are through with them.