11 never make unauthorized substitutions if you are

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Unformatted text preview: is exactly what you want. (11) Never make unauthorized substitutions. If you are wondering what would happen if you used this instead of that, ask me. If it's safe, I may let you try it. If not, I'll let you know what would have happened if you tried it. (12) Never use reagents from an unmarked bottle. All reagent bottles will have proper labels, so if a reagent bottle is unlabeled, it is the incorrect reagent. (13) In any emergency, the fastest way to get the lab supervisors attention is to SCREAM! (14) If you are not feeling well, report it to the laboratory supervisor immediately. If your supervisor should lose consciousness during a lab period, it may be due to chemical fumes. Evacuate the lab immediately and seek another professor for help. Should anybody else lose consciousness in the lab, the lab supervisor will determine whether or not evacuation of the lab is warranted (it probably will not be). (15) Avoid bringing excess coats, books, backpacks or other personal items to the laboratory. There is always the danger of spilling chemicals on them, and they create a fire hazard if left in the isles. In the general chemistry lab, you may use the small cabinets underneath each drawer to store personal items during an experiment (16) Close your lab drawer! Once you have retrieved the equipment you need from your equipment drawer, be sure to close it again. Open drawers can pose tripping hazards (especially bottom drawers) and obstruction of walkways. Thump! OUCH!! The reason we do not have stools in the lab is to avoid similar obstruction. (17) Never smell a chemical straight out of a container. Some chemicals are extremely caustic (fumes severely irritate delicate tissue) and the fumes should be avoided. To safely smell a chemical, hold it two to three feet from your nose, and with your other hand cupped, waft the fumes towards you. You may slowly move the chemical closer to your nose if you cannot smell it all the while taking only small sniffs. Fire (1) In the event of a fire, DON'T PANIC ! This is probably good advice for a lot of sections of this outline. Dakota State University Page 10 of 232 Safety Guidelines (2) out. General Chemistry I and II Lab Manual If a small portion of your clothes catches fire, the fire may be extinguished by patting it (3) If a larger portion of your clothes should catch fire, there are three options for putting the flames out. (1) Drop to the ground and roll. (2) Use the safety shower. (3) Use the fire blanket. (4) NEVER use a fire extinguisher on a person. Carbon dioxide fire extinguishers (distinguishable by their flared out nozzles) are extremely cold and may cause shock to the person or frostbite of the eyes. Chemical fire extinguishers cause excessive scarring by mixing of the chemical in the extinguisher with the damaged skin. All fire extinguishers have the potential of causing asphyxiation. (5) If a fire should occur in a beaker or some other container, cover it with a glass dish or other flame-retardant item. (6) NEVER move ANY object...
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