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  • welcome to a new era of interactive learning lab experiences that mirror

  • traditional campus laps in the convenience of your home

  • just like in the campus laboratory you must follow important safety procedures

  • before

  • during and after experimentation

  • follow these instructions and u too will have a safe and effective learning

  • experience

  • you'll notice micro scale techniques very small quantities of chemicals that

  • contributed to the safety of the experience

  • so make sure you read all the safety sections before starting your lab

  • activities

  • your instructor may have you fill out sign and send in the safety assessment

  • specific safety directions are also listed at the beginning of each

  • experiment in your lab manual

  • this video details the safety protocols you need to understand and employment

  • in order to conduct scientific experiments at home

  • in addition you will learn how the safety information and procedures you

  • performed working independently

  • compare to those safety guidelines procedures and equipment you would use

  • in campus laboratory

  • just like any campus lab there are three phases of laboratory safety measures for

  • the at home work

  • preparation

  • experiment

  • and clean up

  • each phase has unique safety considerations

  • the concepts and procedures will differ somewhat working at home compared to a

  • campus lab

  • but the objectives are always the same

  • at home

  • you are responsible for all safety procedures

  • your preparation

  • taking proper precautions and just good common sense will ensure your safety

  • set yourself to observation mode we're initializing the safety training

  • procedure now

  • let's go

  • the prep phase of your at home lab work requires gathering organizing and

  • preparing all of the materials you will need for your experiment

  • here are the steps

  • before starting each experiment read all information and instructions

  • review the related material safety data sheets an m_s_d_s_ for chemicals used

  • complete the emergency contact card simply set it near your telephone

  • whether at home or in a campus lab prepare yourself to do lab activities

  • wearing proper clothing

  • tying back care and removing dangling jewelry

  • make sure to wash your hands carefully before and after handling laboratory

  • materials

  • and where the safety gear

  • most people find your kitchen the most convenient place to work but garage or

  • study can also work

  • your workspace doors should be close and preferably locked keep any pets and kids

  • away from your work area and don't leave an experiment in progress unattended

  • unless it is in a locked and secure room

  • and never leave a flame or heat experiment unattended

  • in addition no eating drinking

  • cooking or smoking while you're doing your work

  • here are key factors to incorporate your workspace

  • protects your work table or surface by covering it with plastic sheeting or a

  • white garbage bag

  • and open window or stove exhaust fan are adequate to provide proper

  • ventilation

  • certain chemicals have noxious fumes they can be dangerous if inhaled

  • in sufficient quantities

  • and flammable vapors can become explosive if allowed to accumulate

  • enclosed space have some water available either resting bottled water or a

  • bathroom shower nearby

  • and i campus lap you'll find a safety shower and i've watched stations should

  • you ever splash or stock chemicals on yourself

  • or a fire starts

  • this is highly unlikely to happen since the micro scale quantities provided are

  • too small for major reactions

  • for experiments using chemicals keep a bag of sand or kitty litter on hand to

  • absorb and contain any chemical spills

  • keep sodium bicarbonate

  • baking soda on hand to neutralize spilled assets before attempting to wipe

  • them out

  • concentrated acids can cause serious burns

  • so neutralized then before cleanup

  • to help to prevent a painful injury

  • it's also a good idea to have a first aid kit handy

  • if you have a fire extinguisher know where it is in your home

  • take precautions and don't be careless when working with an open flame

  • examined glassware for any chips or breaks and it found discard immediately

  • pay attention when heating items

  • don't touch with their hands to avoid burns

  • some physics and geology experiments can involve the safety hazards of moving

  • objects

  • so always have ample room to conduct these types of experiments

  • you might want to tell other people in your household activities to ensure

  • everyone's safety

  • now do you understand that critical safety measures involved in the prep

  • phase you are ready to move on to the most exciting and fun part

  • the experiment

  • don't let your guard down though safety precautions must be followed throughout

  • all phases of your learning experiences

  • awareness is

  • your ultimate weapon again safety hazards accidents and emergencies during

  • your experience

  • you need to be aware of things that can happen so that you can prevent mishaps

  • react quickly if problems arise should an accident occurred the big boom a

  • full-scale chemical quantities in the laboratory

  • is a small poof

  • in your home environment

  • at home

  • or in a lab always where the appropriate personal safety gear for the experiment

  • you are doing

  • here is more detailed information about chemicals to keep in mind as you conduct

  • your statement

  • some chemicals can be corrosive

  • flammable and generally hazardous

  • red-hot all labels carefully and follow instructions

  • precisely

  • use only the amounts of chemicals needed for your experiment

  • never refill used chemical containers

  • use chemicals may be contaminated and you could end up with and unexpected and

  • potentially unpleasant reaction

  • some of the chemicals included are solvents

  • most solvents are highly flammable and should never be exposed to an open flame

  • examples are alcohols

  • toluene

  • ethers acetone and ethyl acetate

  • certain chemicals produced toxic fumes that can be dangerous if inhaled

  • never directly sniff a chemical

  • instead waft the vapors towards your nose with your hand

  • assets are chemicals that can cause severe burns some handle them with care

  • never add water directly to a concentrated acid

  • this generates heat

  • and can cause dangerous splattering

  • that is similar to what happens when you add water to hot oil

  • the proper way to make some acids with water is to follow the a_a_ rule

  • add acid

  • you should slowly add acid to water while stirring the water with the glass

  • rod

  • never the other way around

  • in addition to caution with chemicals remain away of fire hazards open flames

  • heated objects and burners can pose serious safety threats during experiment

  • here are some tips to keep in mind

  • never leave and open flame unattended

  • it only takes seconds for loose clothing or other items to catch fire

  • on a similar note

  • always extinguish heat sources when not in use

  • test metal and glass objects for heat

  • prior to handling in order to avoid parents

  • and be careful to only eat objects that are designed to be heated

  • certain class objects such as graduated cylinders and flasks are not going to be

  • heated

  • and can shatter when exposed to a heat source

  • is a glass objects shatters or breaks

  • don't risk a cut

  • by picking up the glass with your hands instead sweep the broken pieces

  • into a dust pan carefully dispose of them immediately

  • if a burn occurs

  • cold running water is the best treatment

  • followed by medical attention if necessary

  • there are important safety concerns to keep in mind if you are performing

  • biology experiments that include dissections

  • follow proper cutting and dissection procedures

  • slip of the sharp scalpel can cause a laceration

  • never cut items while holding them in your hand and always cut away from the

  • direction of your body

  • now you know what to be aware of all performing experiments

  • you're ready to get started

  • finishing the experiment does not signal the end of your lab safety

  • protocol

  • it signals the beginning of your final phase cleanup

  • during the cleanup dispose of all chemicals and dissection specimens

  • appropriately

  • used an unwanted my microscale chemicals can be flushed down the toilet or sink

  • and non-chemical items can be disposed of in the trash

  • wrap dissection specimens in newspaper and seal in plastic prior to placing the

  • trash wash your work surface and all laboratory equipment with dish detergent

  • and warm water

  • rinse equipment with distilled water and air dry glass objects clean pipettes by

  • drying up expelling distilled water several times

  • then while squeezing the bulb forcefully swing them in a downward arc

  • double-check that all materials have been properly cleaned and put away

  • store your lap out of reach of children and pets

  • congratulations you have successfully completed the safety training video

  • that before you go please keep in mind one final word of caution

  • that is just for female students

  • if you are pregnant or plan to become pregnant seek your doctor's advice prior

  • to performing the experiments

  • certain experiments may involve chemicals that can pose a risk

  • to your unborn baby

  • your doctor can tell you if it is safe to complete all of the experiments

  • required for your course

  • if you have any further questions regarding the important safety

  • measures required in using your lab discuss them with your instructor

  • or contact hands-on labs incorporated

  • thank you for watching

welcome to a new era of interactive learning lab experiences that mirror

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B1 中級 美國腔

實踐實驗室安全視頻 (Hands-On Labs Safety Video)

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    kuoyumei 發佈於 2021 年 01 月 14 日
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