Transcript Student Lab Procedures

Student Lab
Procedures
Lab Safety Orientation
Appendix D – Science Laboratory
Regulations
These basic rules should be followed by you & your students.
The key to teaching lab safety is to role model it first.
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A class should be spent on:
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Location & use of safety equipment
 Behavior expectations during lab
activities
 Student personal protection
 Good lab practices
A copy of the Regulations should be given to each student.
Appendix E – Student Safety Contract
After Science Laboratory
Regulations have been covered,
students should sign a safety
contract.
 It is recommended that the
parent sign as well, as an
informative measure.
 Student will not be permitted to
do lab work unless contract is
returned.
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Location and Use of Safety
Equipment
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Fire exit
Fire extinguisher
Safety blanket
Safety Shower
Eye Wash Station
Eye Goggles/Glasses
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Lab Coats
First Aid Kit
Chemical Spill Kit
MSDS
Glass Disposal
Student Behavior Expectations
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Maintain quiet, orderly behaviour during lab
activities. Never “horse around” or play practical
jokes in the lab.
Study the procedure of the experiment before
performing it.
Listen to instructions carefully before attempting to
do anything.
Do not begin an experiment until told to do so.
Never attempt unauthorized experiments.
Stand up while doing an experiment unless told
otherwise.
Keep your work area uncluttered. Take to the lab
station only what is necessary.
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Report any any medical conditions (contact lenses, allergies,
respiratory problems – on safety contract).
Keep your hands away from your face/eyes/mouth.
Never bring food or drink into the lab and do not drink from lab
glassware.
Do not chew gum. Never put anything into your mouth during
a lab activity.
Beware of what appears to be drops of water on lab benches.
They may be corrosive liquid.
The storage room is out of bounds to all students.
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Safety goggles must be worn.
Never wear expensive clothing on lab day.
Avoid loose, bulky clothing - secure loose clothing and long
sleeves.
Wear a lab coat when working with chemicals or substances
that can stain or cause injury.
Shorts, skirts, sandals, and bare feet are prohibited. Wear
shoes that completely cover your feet..
Tie back long hair.
Remove dangling jewellery. Best to remove hand jewellery.
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Never poke anything into electrical outlets.
Report any frayed cords, exposed wires and loose
connections. Bare electrical wires can be extremely
dangerous.
Be sure your hands and your lab area are dry before using
electrical equipment.
Unplug cords by pulling the plug and not the cord.
Lay electrical cords where no one can trip on them or get
caught in them.
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Use caution when handling all chemicals. Never
carry dangerous chemicals through a crowd of
classmates.
Never taste chemicals.
Never return unused solutions to stock containers
or reagent bottles. Clean scoopula in between
collecting different chemicals
Never mix chemicals together unless you are told to
do so (and then only in the manner specified).
Dispose of waste materials, chemicals and
specimens as instructed.
Flush sink drains thoroughly after disposing of
approved chemicals in the sink.
Report all spills chemicals to the teacher.
Acid spills should be neutralized with a base,
and base spills should be neutralized with an acid.
If you need to smell the odor of a chemical,
waft the fumes toward your nose with one hand.
Do not put your nose over the container and
inhale the fumes.
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When pouring chemicals from a beaker, use a stirring rod to
direct the flow.
Never pour water into a concentrated acid. Acid should be
poured slowly into water.
Be especially careful with organic solvents; many are highly
flammable and some are toxic.
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Report sharp edges on prisms, mirrors, glass
plates, metal objects.
Examine glassware before each use. Chipped or
cracked glassware should not be used. Report it.
If a piece of glassware gets broken, do not try to
clean it up by yourself. Report it.
Broken glassware should not be disposed of in a
classroom trashcan. There is a special glass
disposal container for it.
Do not immerse hot glassware with cold
water or cold glassware in hot water.
Do not work with glass tubing that has jagged
edges.
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Check glass tubing to ensure that the flow of gas
is not obstructed.
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Never heat anything unless instructed to do so.
Never place combustible materials near a heat
source.
The only type of glassware that may safely be
heated is either Kimax or Pyrex.
Use the proper gloves when handling hot glassware.
Place hot glassware on a ceramic square or on the
base of a rink stand. Do not allow hot objects to
contact lab bench top.
Heat glassware by placing it on a wire gauze
and a ring clamp attached to a ringstand.
Erlenmeyer flasks and beakers should also
be clamped to ring stand.
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Never look into the open end of a container being heated.
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Do not point the open end of a test-tube toward yourself or
anyone else.
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When heating a test tube, move it around slowly over the
flame to distribute the heat evenly.
Use a water bath when heating corrosive liquids in a test tube.
Never reach over an exposed flame or a heating element
Always allow ample time for the heated object to cool before
touching them. Test to see if they are cool enough by bringing
the back of your hand close to them
Always turn off any heat source when not in use.
Report all injuries to the teacher immediately, regardless how
minor.
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The most common type of student injury is a burn caused by
touching objects which have just been heated.
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Immediately flush with cold water until burning sensation is
lessened.
Determine whether an object is hot by bringing the back of your
hand up close.
All objects contaminated with blood or other bodily fluids must
be reported to the teacher immediately for cleaning and/or
proper disposal.
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Clean and wipe dry all desks, tables, or lab work areas.
Unplug all electrical equipment.
Disposed of waste materials, chemicals and specimens as
instructed by your teacher.
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Flush sink drains thoroughly after disposing of chemicals
in the sink.
Always wash your hands with soap and water.
Do not leave lab until your workstation has been checked.