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  • Follow the amoebas on Twitter (@AmoebaSisters) and Facebook.

  • Ah, labs.

  • We LOVE labs.

  • They're the best part of science: the whole doing part.

  • And since you're probably going to be doing some amazing science labs this year, we thought

  • we'd outline a few major points of general lab safety.

  • Because safety is a big deal.

  • And while this is certainly NOT all the points of safety---always read through the safety

  • guidelines specific to the lab you're doing---these are some major, general safety rules that

  • apply for many types of labs.

  • First let's talk about shoes.

  • And hair.

  • We have neither of those.

  • But if you do--- long hair needs to be pulled back.

  • You should wear closed toed shoes because you don't want to be pouring something toxic

  • on your feet or walking on broken glass.

  • Speaking of broken glass--- bags and stuff in the aisles in lab rooms do not help.

  • You want to clear a path and not have your belongings out where someone could trip over

  • them.

  • And no horseplay.

  • To protect your eyes, wear goggles.

  • And when we saywear goggleswe all know that on your forehead doesn't count.

  • If you do feel as though something has gotten in your eyes, you will want to use the eyewash

  • station, which will require you to hold your eyes open under the running water.

  • If your lab involves working with specimens or chemicals, you will likely be advised to

  • wear gloves.

  • Gloves are important.

  • Yes, sometimes they make your hands feel clammy.

  • But you know what's worse?

  • Chemicals that can irritate or burn your skin.

  • If you have an allergy to latex, you should make sure that the gloves you are using are

  • latex free---ask your instructor.

  • In fact, if you have any allergies, you should let your instructor know.

  • When you finish a lab, even if you wore gloves, it's a good idea to wash your hands after

  • time in the lab.

  • Some labs may require you to wear an apron to protect your clothes.

  • Depending on what type of course you are in and the type of labs you are doing, you also

  • may have a safety shower which will dump a very large amount of water on you if you get

  • some type of hazardous chemical on you.

  • If you accidentally break glassware, don't pick it up.

  • It could cut you.

  • A broom and a dustpan should be used to clean it up, and there should be a place designated

  • for broken glass.

  • Not the regular trash where it would just break through the trash liner.

  • If you see glassware that is chipped already, don't use it and tell your instructor.

  • Never drink or eat anything in the lab.

  • That includes chemicals.

  • Don't taste or smell chemicals.

  • Read labels.

  • Don't ever pour chemicals that you may be using back into the bottle that they came

  • from.

  • As soon as you finish pouring chemicals out of a container, the container should be immediately

  • closed.

  • When you're done with a chemical, you want to make sure you properly dispose of it.

  • Many chemicals can't just be put down the drain.

  • In fact, some solid items that you use in your labs also cannot be thrown away in the

  • regular trash and have to be disposed of as hazardous waste.

  • Always check with your instructor.

  • In some labs, you may have a special ventilation system, also known as a “fume hood.”

  • This is used when dealing with volatile substances, which is a fancy way of describing a substance

  • that easily vaporizes.

  • Some of your labs may require the fume hood because some of these volatile substances

  • may be harmful if you inhale them.

  • When you're heating things up, like this test tube in a hot water bath, don't have

  • the test tube pointed towards you.

  • Use tongs or heat protective gloves to handle the test tube that you may be heating.

  • Also, electricity and water are not a good mix.

  • So when you're doing your super awesome microscope lab, you want to keep the water

  • away from the electrical cord.

  • And speaking of microscopes, we could have an entire video on just working with the microscope.

  • But for now, we'll make sure to mention carrying it with two hands.

  • One hand underneath the base and the other holding the microscope arm.

  • If you are using any special science equipment, it is important to know how to carefully carry

  • it.

  • If you are in a lab that has an open flame, obviously be aware of the flame.

  • Review with your instructor how to operate the valve that controls the gas fueling the

  • flame.

  • Review with your instructor how to properly heat the various glassware that will be suspended

  • over the flame.

  • Every time you are in the lab with an open flame, you must keep all materials that may

  • be flammable away from the area near the flame.

  • Depending on the types of labs you are doing, your lab room may also have a fire extinguisher

  • and/or a fire blanket in the room.

  • Finally, the MSDS.

  • It stands for material safety data sheet.

  • It's available for pretty much every substance you use in your lab.

  • You should refer to it, because it will give you all kinds of safety information on a substance

  • including how to safely handle it, what to do if there is an accident with it, how to

  • safely dispose of it, and more.

  • Ok.

  • So, yeah, that was a lot.

  • And there are so many more safety guidelines that may be specific to the lab that you are

  • going to do so you always want to go through specific guidelines in advance of your lab.

  • We're going to put some items up here so you can pause this video and determine where

  • those items are if they're relevant to your lab room.

  • Remember, don't be intimidated---just respect safety rules and guidelines because if you're

  • following them, hands on science is simply awesome.

  • In addition to the hands-on part of science, you can always check out our science comic

  • video clips that may be helpful on a variety of science topics you might cover this year.

  • Wellthat's it for the Amoeba Sisters and we remind you to stay curious.

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B1 中級 美國腔

一般實驗室安全 (General Lab Safety)

  • 8 1
    Lily Wei 發佈於 2021 年 01 月 14 日
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