Unit 1 – Lecture 1

Lab SafetyHow can YOU maintain lab safety?

STOP to thinkuse common senseconsider the consequences ASK the teacher if in doubt

Proper Attire - Discussavoid floppy/dangly items – WHY?

get tangled up in equipment & cause accidents

tie hair back – no loose/long hair – WHY?gets caught on things or can catch fire

easily [which smells really bad!]closed-toed shoes – WHY?long pants / no shorts – WHY?

Know Your Equipment

Know Your EquipmentGogglesMany states REQUIRE that students wear

protective goggles or glasses in the lab. WHY?

When would you wear which type of goggle?

Know Your EquipmentFire Blanket

pull the blanket out of the wall holderwrap it around the victim to

smother the fire.

Know Your EquipmentFire Extinguisher

carbon dioxide = general purpose

dry chemical [powder] electrical or other difficult fires

don’t use them on people…why?

Know Your EquipmentFire Extinguisher – the Tag

tells what type you have [color can also do this]

indicates the last service/test date

Know Your EquipmentFire Extinguisher – Operation

locate the “key” [round]twist the key to break the nylon

cord [can be hard to just pull]pull the key offpoint the nozzle in the direction of

the firesqueeze the handle to begin spraycarbon dioxide or powder helps cool the

fire, restrict oxygen to the firefire goes out

Know Your EquipmentEyewash Fountain

if you get something from the lab in your eye— GET IT OUT IMMEDIATELY!

run some water through the eyewash fountain before you use it.

retract your eyelid (hold it open); don’t squint—this restricts water access. run fresh water over your eye for several

minutes. (20 minutes for acids or bases)

go to the school nurse immediately afterward.

Know Your EquipmentFirst Aid Kit

located in Mr. Jackson’s roomfor serious injuries the nurse or 911 will be

called.

Discuss – what’s in a first aid kit?

Know Your EquipmentFume Hood

used for some reactions that give off vapors

that you can smell and those you cannotdraft of the hood sweeps away vapors so

that the lab itself maintains reasonable air quality.

Know Your EquipmentSafety Shower

used in emergency ONLYex: you are [or a lab mate is] ON FIRE

pull the handle—a deluge of water will result.

flames will be rapidly extinguished NOT used for all firesshould also be used in the event of a massive

dangerous chemical spill on yourself or a lab mate

this will seldom be necessary.

OtherBroken Glass:

announce something’s been brokenno one should move around until cleanedclean immediately

not with your handsplace the broken glass in a SHARPS

containerthick walled carton, that will be sealed and

discarded as such. if such a container is not available, the

trash can is an acceptable substitute.

OtherMaterial Data Safety Sheets [MSDS]

attached to chemicals when purchasedtypically still attached to most chemicals hereall potentially harmful chemicals in the lab

must have an MSDS on filemay find other/more detailed MSDS

sheets in a chemical stock room if needed

Yellow often means reactive with water!!!

HONORS ONLY

NFPA Label – Discuss Summarize the __ of/on the NFPA label.

shapelocation of the colorsmeaning of the colors

HONORS ONLY

Student Use of the LabNO unauthorized or unmonitored labsNO food or drinkDO NOT eat or drink from lab equipment

you never know what someone did before you!

Student Use of the LabDO NOT smell a flask/beaker/etc directly …waft it if absolutely necessary not near

your faceBE CAREFUL!!! Do not attempt to touch

something to see if it’s hot. Do not hand a hot item to someone else.

heat tubes/beakers/etc pointed AWAY from others in the room

Student Use of the LabAlways Add Acid to water, NOT the

other way around. adding water to acid can cause the acid to

splash.the heat generated by the reaction will be

lessened

Student Use of the Labread & complete [re-write] the procedure

[ALL of it] BEFORE lab daymake sure your materials are set up correctly

and completely, even if they were there before you came.

if using matches, light one BEFORE you turn on the gas – the wet the match and put it in a container, not the sink

Student Use of the LabNO HORSEPLAY!!exit the lab in a well-ordered

fashion