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Lab Safety

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Mike Keyser

on 18 August 2011

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Transcript of Lab Safety

Important Results Safety Rules Continued Lab Safety Quiz This San Francisco Budapest Important
Details (cc) photo by Metro Centric on Flickr (cc) photo by Franco Folini on Flickr (cc) photo by jimmyharris on Flickr Stockholm (cc) photo by Metro Centric on Flickr Some rules are NOT to be broken. That is true of the rules used in a Chemistry or Physics lab. They are really, truly for your safety and not your humiliation. 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. 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! Read the Chemical Safety Information A Material Safety Data Sheet (MSDS) should be available for every chemical you use in lab. Read these and follow the recommendations for safe use and disposal of the material Dress Appropriately (for lab, not fashion or the weather) No sandals, no clothes you love more than life, no contact lenses. long pants are preferable to shorts or short skirts. Tie long hair back. Wear safety goggles and a lab coat (apron). 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 (waft, waft, waft) 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 the 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 much harder for the data to get lost in your lab book. For some experiments, it may be helpful to take data beforelab. No, I'm not telling you to dry-lab or cheat, but being able to project likely data will help you catch bad lab procedure before you are three hours or so into a project. Know what to expect. You should always read the experiment in advance. Be Prepared for Class and Lab (have all of your supplies) Always Be Safe (WWKD) Have Fun (learning is cool)! 1. Never reach across a flame. Also, do not wear loose clothing or Jewelry. 2. Immediately notify your teacher if any chemical gets on your skin or clothing to find out what to do to clean it off. 3. Never look directly into a test tube when mixing or heating chemicals. Always point a test tube away from you and others when heating it over a flame or other heat source. 4. Never mix chemicals (or perform tests) without your teacher's permission. 5. Neve run (or push someone else) in the Lab. This rule applies at ALL TIMES! 6. Keep lids on bottles and containers when not in use. 7. Never use broken or chipped glassware. 8. Keep your work area clean and keep all materials (clothing, hair, papers, etc.) away from a flame or heat source. Always clean up your work area and equipment after an experiment is completed. Equipment must be returned to its proper place. 9. Immediately notify your teacher if you get cut or have another injury when performing an experiment. 10. Wash your hands before and after each experiment Could turn into this! 1. What safety device should be used if a student pours acid into a beaker and it splashes into their eyes?

A: Fume Hood
B: Fire Extinguisher
C: Eye Wash Station
D: Fire Blanket 2. What safety equipment should the student have used to avoid the accident mentioned in question 1?

A: Eye Wash Station
B: Goggles
C: Safety Shower
DL Fire Blanket 3. What piece of equipment should be used when dealing with chemicals that have dangerous fumes?

A: Fume Hood
B: Fire Extinguisher
C: Eye Wash Station
D: Fire Blanket 4. Your lab partner just (accidentally) lit your notebook on fire. What piece of safety equipment should you reach for?

A: Fume Hood
B: Fire Extinguisher
C: Eye Wash Station
D: Fire Blanket 5. While trying to extinguish your notebook, your sweater catches on fire. What item should your partner use to save you?

A: Eye Wash Station
B: Goggles
C: Safety Shower
D: Fire Blanket 6. You are safe, but still in a slight state of shock. You knock an entire beaker of acid onto your lab partner's pants. What item will be used to save the Levi's?

A: Eye Wash Station
B: Goggles
C: Safety Shower
D: Fire Blanket 7. One of the lab safety rules states not to wear loose clothing or jewelry. Why do you think this matters? 8. Certain things are never allowed in a lab. Check all that are not allowed.

Food Lab Coats

Goggles Beverages

Horseplay Candy 9. You see on your table an unlabeled beaker filled with a clear liquid. The contents,

A: Must be water, go ahead and drink it.
B: Are probably water, drink it anyway, what's the worst that could happen?
C: Are a really strong acid. Pour it on your desk and see if it burns through.
D: Are unknown. Leave it alone, and inform your instructor. 10. The most important tool to have in a lab setting is

A: Beakers
B: Bunsen Burners
C: Hammers, definitely hammers
D: Common sense and maturity 1. Eye Wash Station (Fire Extinguisher, really?) 2. Goggles, of course 3. Fume Hood 4. Fire Extinguisher (Please don't use the eye wash station) 5. Fire Blanket (Safety shower would work, but the blanket would be better) 6. This is when you use the Safety Shower 7. You wouldn't want to catch any loose clothing on fire or have your loose clothing or jewelry knock some chemicals or equipment over. 8. No food or beverage. No gum or candy. Definitely no horseplay! 9. All chemicals shold have labels on them. If they don't, tell your instructor immediately. 10. Common sense and maturity will keep you safe in the lab most times. Accidents do sometimes happen, but if kept to a minimum, you will have an awesome experience in the lab. How did you do? Will you end up like this guy? Or this guy?
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